diff --git a/docs/configuration/index.md b/docs/configuration/index.md
index 42cce627..0ed00637 100644
--- a/docs/configuration/index.md
+++ b/docs/configuration/index.md
@@ -90,7 +90,7 @@ Supported external time sources are GPS, LORAWAN network time and LORAWAN applic
 
 ## Syncing multiple paxcounters 
 
-A fleet of paxcounters can be synchronized to keep all devices wake up and start scanning at the same time. Synchronization is based on top-of-hour as common time point of reference. This feature requires time-of-day to be present on each device. Thus, `TIME_SYNC_INTERVAL` option, as explained above, must be enabled. Wake up syncing is enabled by setting `SYNCWAKEUP` in `paxcounter.conf` to a value X, greater than zero, and smaller than `SLEEPCYCLE`. This defines a time window, centered at top-of-hour, sized +/- X seconds. If a device, returning from sleep, would wakeup within this time window, it's wakeup will be adjusted to top-of-hour.
+A fleet of paxcounters can be synchronized to keep all devices wake up and start scanning at the same time. Synchronization is based on top-of-hour as common time point of reference. This feature requires time-of-day to be present on each device. Thus, `TIME_SYNC_INTERVAL` option, as explained above, must be enabled. Wake up syncing is enabled by setting `SYNCWAKEUP` in `paxcounter.conf` to a value X, in seconds, greater than zero, and smaller than `SLEEPCYCLE` (in seconds/10). This defines a time window, centered at top-of-hour, sized +/- X seconds. If a device, returning from sleep, would wakeup within this time window, it's wakeup will be adjusted to top-of-hour.
 
 ## Wall clock controller
 
diff --git a/docs/remotecontrol.md b/docs/remotecontrol.md
index b1faafc3..d573ca12 100644
--- a/docs/remotecontrol.md
+++ b/docs/remotecontrol.md
@@ -91,6 +91,11 @@ Send for example `83` `86` as Downlink on Port 2 to get battery status and time/
 	0 ... 255 duration for scanning a bluetooth advertising channel in seconds/100
 	e.g. 8 -> each channel is scanned for 80 milliseconds [default]
 
+#### 0x0D set wakeup sync window
+
+	bytes 1..2 = wakeup sync window size in seconds (MSB), 0..255 (0 = no wakuep sync)
+	e.g. {0x02, 0x58} -> device adjusts it's wakeup time when it is +/- 5 minutes from top-of-hour [default = 0]
+
 #### 0x0E set Bluetooth scanner
 
 	0 = disabled
diff --git a/include/globals.h b/include/globals.h
index 35adfb7e..0b042d50 100644
--- a/include/globals.h
+++ b/include/globals.h
@@ -64,6 +64,7 @@ typedef struct __attribute__((packed)) {
   int16_t rssilimit;   // threshold for rssilimiter, negative value!
   uint8_t sendcycle;   // payload send cycle [seconds/2]
   uint16_t sleepcycle; // sleep cycle [seconds/10]
+  uint16_t wakesync;   // time window [seconds] to sync wakeup on top-of-hour
   uint8_t wifichancycle; // wifi channel switch cycle [seconds/100]
   uint8_t blescantime;   // BLE scan cycle duration [seconds]
   uint8_t blescan;       // 0=disabled, 1=enabled
@@ -109,6 +110,6 @@ typedef struct {
   float pm25;
 } sdsStatus_t;
 
-extern char clientId[20];   // unique clientID
+extern char clientId[20]; // unique clientID
 
 #endif
\ No newline at end of file
diff --git a/platformio_orig.ini b/platformio_orig.ini
index bea258d0..4de41473 100644
--- a/platformio_orig.ini
+++ b/platformio_orig.ini
@@ -46,7 +46,7 @@ description = Paxcounter is a device for metering passenger flows in realtime. I
 
 [common]
 ; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
-release_version = 3.4.7
+release_version = 3.5.0
 ; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
 ; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
 debug_level = 3
@@ -73,7 +73,8 @@ lib_deps_sensors =
     adafruit/Adafruit Unified Sensor @ ^1.1.7
     adafruit/Adafruit BME280 Library @ ^2.2.2
     adafruit/Adafruit BMP085 Library @ ^1.2.2
-    boschsensortec/BSEC Software Library @ 1.6.1480
+    ;boschsensortec/BSEC Software Library @ 1.8.1492
+    https://github.com/boschsensortec/BSEC-Arduino-library
     lewapek/Nova Fitness Sds dust sensors library @ ^1.5.1
 lib_deps_basic =
     greyrook/libpax @ ^1.1.0
diff --git a/platformio_orig_s3.ini b/platformio_orig_s3.ini
index 913f9c4c..8b841d62 100644
--- a/platformio_orig_s3.ini
+++ b/platformio_orig_s3.ini
@@ -10,7 +10,7 @@ description = Paxcounter is a device for metering passenger flows in realtime. I
 
 [common]
 ; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
-release_version = 3.4.7
+release_version = 3.5.0
 ; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
 ; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
 debug_level = 3
diff --git a/src/bmesensor.cpp b/src/bmesensor.cpp
index 50e55821..1a1ae384 100644
--- a/src/bmesensor.cpp
+++ b/src/bmesensor.cpp
@@ -82,20 +82,20 @@ int bme_init(void) {
 int checkIaqSensorStatus(void) {
   int rslt = 1; // true = 1 = no error, false = 0 = error
 
-  if (iaqSensor.status != BSEC_OK) {
+  if (iaqSensor.bsecStatus != BSEC_OK) {
     rslt = 0;
-    if (iaqSensor.status < BSEC_OK)
-      ESP_LOGE(TAG, "BSEC error %d", iaqSensor.status);
+    if (iaqSensor.bsecStatus < BSEC_OK)
+      ESP_LOGE(TAG, "BSEC error %d", iaqSensor.bsecStatus);
     else
-      ESP_LOGW(TAG, "BSEC warning %d", iaqSensor.status);
+      ESP_LOGW(TAG, "BSEC warning %d", iaqSensor.bsecStatus);
   }
 
-  if (iaqSensor.bme680Status != BME680_OK) {
+  if (iaqSensor.bme68xStatus != BME68X_OK) {
     rslt = 0;
-    if (iaqSensor.bme680Status < BME680_OK)
-      ESP_LOGE(TAG, "BME680 error %d", iaqSensor.bme680Status);
+    if (iaqSensor.bme68xStatus < BME68X_OK)
+      ESP_LOGE(TAG, "BME680 error %d", iaqSensor.bme68xStatus);
     else
-      ESP_LOGW(TAG, "BME680 warning %d", iaqSensor.bme680Status);
+      ESP_LOGW(TAG, "BME680 warning %d", iaqSensor.bme68xStatus);
   }
 
   return rslt;
diff --git a/src/configmanager.cpp b/src/configmanager.cpp
index 7d6181bf..3360a4ef 100644
--- a/src/configmanager.cpp
+++ b/src/configmanager.cpp
@@ -3,7 +3,6 @@
 #include "globals.h"
 #include "configmanager.h"
 
-
 // namespace for device runtime preferences
 #define DEVCONFIG "paxcntcfg"
 
@@ -38,6 +37,7 @@ static void defaultConfig(configData_t *myconfig) {
   myconfig->rssilimit = RSSILIMIT; // threshold for rssilimiter, negative value!
   myconfig->sendcycle = SENDCYCLE; // payload send cycle [seconds/2]
   myconfig->sleepcycle = SLEEPCYCLE; // sleep cycle [seconds/10]
+  myconfig->wakesync = SYNCWAKEUP;   // wakeup sync window [seconds]
   myconfig->wifichancycle =
       WIFI_CHANNEL_SWITCH_INTERVAL; // wifi channel switch cycle [seconds/100]
   myconfig->blescantime =
diff --git a/src/hal/generic.h b/src/hal/generic.h
index 42849c45..cd339f48 100644
--- a/src/hal/generic.h
+++ b/src/hal/generic.h
@@ -37,7 +37,7 @@
 // BME680 sensor on I2C bus
 #define HAS_BME 1 // Enable BME sensors in general
 #define HAS_BME680 GPIO_NUM_21, GPIO_NUM_22 // SDA, SCL
-#define BME680_ADDR BME680_I2C_ADDR_PRIMARY // connect SDIO of BME680 to GND
+#define BME680_ADDR BME68X_I2C_ADDR_LOW // connect SDIO of BME680 to GND
 
 // BME280 sensor on I2C bus
 //#define HAS_BME 1 // Enable BME sensors in general
diff --git a/src/hal/octopus32.h b/src/hal/octopus32.h
index 6b5b66c4..35361030 100644
--- a/src/hal/octopus32.h
+++ b/src/hal/octopus32.h
@@ -18,7 +18,7 @@
 // Octopus32 has a pre-populated BME680 on i2c addr 0x76
 #define HAS_BME 1 // Enable BME sensors in general
 #define HAS_BME680 GPIO_NUM_23, GPIO_NUM_22 // SDA, SCL
-#define BME680_ADDR BME680_I2C_ADDR_PRIMARY // connect SDIO of BME680 to GND
+#define BME680_ADDR BME68X_I2C_ADDR_LOW // connect SDIO of BME680 to GND
 
 #define HAS_LED        13  // ESP32 GPIO12 (pin22) On Board LED
 //#define LED_ACTIVE_LOW 1  // Onboard LED is active when pin is LOW
diff --git a/src/hal/ttgobeam.h b/src/hal/ttgobeam.h
index 76e6ae51..a75059f1 100644
--- a/src/hal/ttgobeam.h
+++ b/src/hal/ttgobeam.h
@@ -30,7 +30,7 @@
 // BME680 sensor on I2C bus
 //#define HAS_BME 1 // Enable BME sensors in general
 //#define HAS_BME680 SDA, SCL
-//#define BME680_ADDR BME680_I2C_ADDR_PRIMARY // !! connect SDIO of BME680 to GND !!
+//#define BME680_ADDR BME68X_I2C_ADDR_LOW // !! connect SDIO of BME680 to GND !!
 
 // display (if connected)
 //#define HAS_DISPLAY 1
diff --git a/src/hal/ttgobeam10.h b/src/hal/ttgobeam10.h
index 9dbfe173..dbceeba6 100644
--- a/src/hal/ttgobeam10.h
+++ b/src/hal/ttgobeam10.h
@@ -52,7 +52,7 @@ Reset -> reset device
 // BME680 sensor on I2C bus
 //#define HAS_BME 1 // Enable BME sensors in general
 //#define HAS_BME680 SDA, SCL
-//#define BME680_ADDR BME680_I2C_ADDR_PRIMARY // !! connect SDIO of BME680 to GND !!
+//#define BME680_ADDR BME68X_I2C_ADDR_LOW // !! connect SDIO of BME680 to GND !!
 
 //#define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
 
diff --git a/src/rcommand.cpp b/src/rcommand.cpp
index fbdb833f..21639cf7 100644
--- a/src/rcommand.cpp
+++ b/src/rcommand.cpp
@@ -2,7 +2,6 @@
 #include "globals.h"
 #include "rcommand.h"
 
-
 static QueueHandle_t RcmdQueue;
 TaskHandle_t rcmdTask;
 
@@ -59,7 +58,7 @@ void set_rssi(uint8_t val[]) {
   current_config.ble_rssi_threshold = cfg.rssilimit;
   libpax_update_config(&current_config);
   init_libpax();
-  ESP_LOGI(TAG, "Remote command: set RSSI limit to %d", cfg.rssilimit);
+  ESP_LOGI(TAG, "Remote command: set RSSI limit to %hd", cfg.rssilimit);
 }
 
 void set_sendcycle(uint8_t val[]) {
@@ -67,7 +66,7 @@ void set_sendcycle(uint8_t val[]) {
     return;
   // update send cycle interrupt [seconds / 2]
   cfg.sendcycle = val[0];
-  ESP_LOGI(TAG, "Remote command: set send cycle to %d seconds",
+  ESP_LOGI(TAG, "Remote command: set send cycle to %u seconds",
            cfg.sendcycle * 2);
   libpax_counter_stop();
   init_libpax();
@@ -76,10 +75,16 @@ void set_sendcycle(uint8_t val[]) {
 void set_sleepcycle(uint8_t val[]) {
   // swap byte order from msb to lsb, note: this is a platform dependent hack
   cfg.sleepcycle = __builtin_bswap16(*(uint16_t *)(val));
-  ESP_LOGI(TAG, "Remote command: set sleep cycle to %d seconds",
+  ESP_LOGI(TAG, "Remote command: set sleep cycle to %hu seconds",
            cfg.sleepcycle * 10);
 }
 
+void set_wakesync(uint8_t val[]) {
+  // swap byte order from msb to lsb, note: this is a platform dependent hack
+  cfg.wakesync = __builtin_bswap16(*(uint16_t *)(val));
+  ESP_LOGI(TAG, "Remote command: set wakesync to %hu seconds", cfg.wakesync);
+}
+
 void set_wifichancycle(uint8_t val[]) {
   cfg.wifichancycle = val[0];
   libpax_counter_stop();
@@ -193,7 +198,7 @@ void set_sensor(uint8_t val[]) {
     return; // invalid sensor number -> exit
   }
 
-  ESP_LOGI(TAG, "Remote command: set sensor #%d mode to %s", val[0],
+  ESP_LOGI(TAG, "Remote command: set sensor #%u mode to %s", val[0],
            val[1] ? "on" : "off");
 
   if (val[1])
@@ -213,7 +218,7 @@ void set_loradr(uint8_t val[]) {
 #if (HAS_LORA)
   if (validDR(val[0])) {
     cfg.loradr = val[0];
-    ESP_LOGI(TAG, "Remote command: set LoRa Datarate to %d", cfg.loradr);
+    ESP_LOGI(TAG, "Remote command: set LoRa Datarate to %u", cfg.loradr);
     LMIC_setDrTxpow(assertDR(cfg.loradr), KEEP_TXPOW);
     ESP_LOGI(TAG, "Radio parameters now %s / %s / %s",
              getSfName(updr2rps(LMIC.datarate)),
@@ -222,7 +227,7 @@ void set_loradr(uint8_t val[]) {
   } else
     ESP_LOGI(
         TAG,
-        "Remote command: set LoRa Datarate called with illegal datarate %d",
+        "Remote command: set LoRa Datarate called with illegal datarate %u",
         val[0]);
 #else
   ESP_LOGW(TAG, "Remote command: LoRa not implemented");
@@ -275,15 +280,15 @@ void set_wifiant(uint8_t val[]) {
 void set_rgblum(uint8_t val[]) {
   // Avoid wrong parameters
   cfg.rgblum = (val[0] <= 100) ? (uint8_t)val[0] : RGBLUMINOSITY;
-  ESP_LOGI(TAG, "Remote command: set RGB Led luminosity %d", cfg.rgblum);
-};
+  ESP_LOGI(TAG, "Remote command: set RGB Led luminosity %u", cfg.rgblum);
+}
 
 void set_lorapower(uint8_t val[]) {
 #if (HAS_LORA)
   // set data rate and transmit power only if we have no ADR
   if (!cfg.adrmode) {
     cfg.txpower = val[0];
-    ESP_LOGI(TAG, "Remote command: set LoRa TXPOWER to %d", cfg.txpower);
+    ESP_LOGI(TAG, "Remote command: set LoRa TXPOWER to %u", cfg.txpower);
     LMIC_setDrTxpow(assertDR(cfg.loradr), cfg.txpower);
   } else
     ESP_LOGI(
@@ -293,14 +298,14 @@ void set_lorapower(uint8_t val[]) {
 #else
   ESP_LOGW(TAG, "Remote command: LoRa not implemented");
 #endif // HAS_LORA
-};
+}
 
 void get_config(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: get device configuration");
   payload.reset();
   payload.addConfig(cfg);
   SendPayload(CONFIGPORT);
-};
+}
 
 void get_status(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: get device status");
@@ -315,7 +320,7 @@ void get_status(uint8_t val[]) {
                     RTC_restarts);
 #endif
   SendPayload(STATUSPORT);
-};
+}
 
 void get_gps(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: get gps status");
@@ -328,7 +333,7 @@ void get_gps(uint8_t val[]) {
 #else
   ESP_LOGW(TAG, "GPS function not supported");
 #endif
-};
+}
 
 void get_bme(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: get bme680 sensor data");
@@ -339,7 +344,7 @@ void get_bme(uint8_t val[]) {
 #else
   ESP_LOGW(TAG, "BME sensor not supported");
 #endif
-};
+}
 
 void get_batt(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: get battery voltage");
@@ -350,7 +355,7 @@ void get_batt(uint8_t val[]) {
 #else
   ESP_LOGW(TAG, "Battery voltage not supported");
 #endif
-};
+}
 
 void get_time(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: get time");
@@ -359,35 +364,35 @@ void get_time(uint8_t val[]) {
   payload.addTime(t);
   payload.addByte(sntp_get_sync_status() << 4 | timeSource);
   SendPayload(TIMEPORT);
-};
+}
 
 void set_timesync(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: timesync requested");
   setTimeSyncIRQ();
-};
+}
 
 void set_time(uint8_t val[]) {
   // swap byte order from msb to lsb, note: this is a platform dependent hack
   uint32_t t = __builtin_bswap32(*(uint32_t *)(val));
-  ESP_LOGI(TAG, "Remote command: set time to %d", t);
+  ESP_LOGI(TAG, "Remote command: set time to %lu", t);
   setMyTime(t, 0, _set);
-};
+}
 
 void set_flush(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: flush");
   // does nothing
   // used to open receive window on LoRaWAN class a nodes
-};
+}
 
 void set_loadconfig(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: load config from NVRAM");
   loadConfig();
-};
+}
 
 void set_saveconfig(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: save config to NVRAM");
   saveConfig(false);
-};
+}
 
 // assign previously defined functions to set of numeric remote commands
 // format: {opcode, function, number of function arguments}
@@ -399,17 +404,17 @@ static const cmd_t table[] = {
     {0x07, set_loraadr, 1},       {0x08, set_screensaver, 1},
     {0x09, set_reset, 1},         {0x0a, set_sendcycle, 1},
     {0x0b, set_wifichancycle, 1}, {0x0c, set_blescantime, 1},
-    {0x0e, set_blescan, 1},       {0x0f, set_wifiant, 1},
-    {0x10, set_rgblum, 1},        {0x13, set_sensor, 2},
-    {0x14, set_payloadmask, 1},   {0x15, set_bme, 1},
-    {0x16, set_batt, 1},          {0x17, set_wifiscan, 1},
-    {0x18, set_flush, 0},         {0x19, set_sleepcycle, 2},
-    {0x20, set_loadconfig, 0},    {0x21, set_saveconfig, 0},
-    {0x80, get_config, 0},        {0x81, get_status, 0},
-    {0x83, get_batt, 0},          {0x84, get_gps, 0},
-    {0x85, get_bme, 0},           {0x86, get_time, 0},
-    {0x87, set_timesync, 0},      {0x88, set_time, 4},
-    {0x99, set_flush, 0}};
+    {0x0d, set_wakesync, 2},      {0x0e, set_blescan, 1},
+    {0x0f, set_wifiant, 1},       {0x10, set_rgblum, 1},
+    {0x13, set_sensor, 2},        {0x14, set_payloadmask, 1},
+    {0x15, set_bme, 1},           {0x16, set_batt, 1},
+    {0x17, set_wifiscan, 1},      {0x18, set_flush, 0},
+    {0x19, set_sleepcycle, 2},    {0x20, set_loadconfig, 0},
+    {0x21, set_saveconfig, 0},    {0x80, get_config, 0},
+    {0x81, get_status, 0},        {0x83, get_batt, 0},
+    {0x84, get_gps, 0},           {0x85, get_bme, 0},
+    {0x86, get_time, 0},          {0x87, set_timesync, 0},
+    {0x88, set_time, 4},          {0x99, set_flush, 0}};
 
 static const uint8_t cmdtablesize =
     sizeof(table) / sizeof(table[0]); // number of commands in command table
@@ -492,7 +497,7 @@ esp_err_t rcmd_init(void) {
     ESP_LOGE(TAG, "Could not create rcommand send queue. Aborting.");
     return ESP_FAIL;
   }
-  ESP_LOGI(TAG, "Rcommand send queue created, size %d Bytes",
+  ESP_LOGI(TAG, "Rcommand send queue created, size %u Bytes",
            RCMD_QUEUE_SIZE * sizeof(RcmdBuffer_t));
 
   xTaskCreatePinnedToCore(rcmd_process, // task function
diff --git a/src/reset.cpp b/src/reset.cpp
index 13ec8afc..51d463ca 100644
--- a/src/reset.cpp
+++ b/src/reset.cpp
@@ -19,6 +19,32 @@ void reset_rtc_vars(void) {
   RTC_restarts = 0;
 }
 
+#if (HAS_TIME)
+void adjust_wakeup(uint32_t *wakeuptime) {
+  // only adjust wakeup if we have a valid time
+  if ((timeSource == _unsynced) ||
+      (sntp_get_sync_status() == SNTP_SYNC_STATUS_IN_PROGRESS)) {
+    ESP_LOGI(TAG, "Syncwakeup: No valid time for sync");
+    return;
+  }
+
+  time_t now;
+  time(&now);
+
+  // 1..3600 seconds between next wakeup time and following top-of-hour
+  uint16_t shift_sec = 3600 - (now + *wakeuptime) % 3600;
+
+  if (shift_sec <= SYNCWAKEUP) {
+    *wakeuptime += shift_sec; // delay wakeup to catch top-of-hour
+    ESP_LOGI(TAG, "Syncwakeup: Wakeup %hu sec postponed", shift_sec);
+  } else if (shift_sec >= (3600 - SYNCWAKEUP)) {
+    *wakeuptime = 3600 - shift_sec; // shorten wake up to next top-of-hour
+    ESP_LOGI(TAG, "Syncwakeup: Wakeup %hu sec preponed", shift_sec);
+  } else
+    ESP_LOGI(TAG, "Syncwakeup: Wakeup keeping unshifted");
+}
+#endif
+
 void do_reset(bool warmstart) {
   if (warmstart) {
     ESP_LOGI(TAG, "restarting device (warmstart)");
@@ -145,31 +171,14 @@ void enter_deepsleep(uint32_t wakeup_sec, gpio_num_t wakeup_gpio) {
   // shutdown i2c bus
   i2c_deinit();
 
+#if (HAS_TIME)
+  if (cfg.wakesync && cfg.sleepcycle)
+    adjust_wakeup(&wakeup_sec);
+#endif
+
   // configure wakeup sources
   // https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/sleep_modes.html
 
-#if (HAS_TIME)
-#if (SYNCWAKEUP) && (SLEEPCYCLE)
-  if ((timeSource != _unsynced) &&
-      (sntp_get_sync_status() !=
-       SNTP_SYNC_STATUS_IN_PROGRESS)) { // only sync if we have a valid time
-    time_t now;
-    time(&now);
-
-    // 1..3600 seconds between next wakeup time and following top-of-hour
-    uint16_t shift_sec = 3600 - (now + wakeup_sec) % 3600;
-
-    if (shift_sec <= SYNCWAKEUP) {
-      wakeup_sec += shift_sec; // delay wakeup to catch top-of-hour
-      ESP_LOGI(TAG, "Syncwakeup: Wakeup %hu sec postponed", shift_sec);
-    } else if (shift_sec >= (3600 - SYNCWAKEUP)) {
-      wakeup_sec = 3600 - shift_sec; // shorten wake up to next top-of-hour
-      ESP_LOGI(TAG, "Syncwakeup: Wakeup %hu sec preponed", shift_sec);
-    }
-  }
-#endif
-#endif
-
   // set up RTC wakeup timer, if we have
   if (wakeup_sec > 0) {
     esp_sleep_enable_timer_wakeup(wakeup_sec * uS_TO_S_FACTOR);
diff --git a/src/timekeeper.cpp b/src/timekeeper.cpp
index 4b9c69ab..4412990d 100644
--- a/src/timekeeper.cpp
+++ b/src/timekeeper.cpp
@@ -6,8 +6,8 @@
 
 
 // symbol to display current time source
-// G = GPS / R = RTC / L = LORA / * = no sync / ? = never synced
-const char timeSetSymbols[] = {'G', 'R', 'L', '*', '?'};
+// G = GPS / R = RTC / L = LORA / ? = unsynced / * = set
+const char timeSetSymbols[] = {'G', 'R', 'L', '?', '*'};
 
 DRAM_ATTR bool TimePulseTick = false;
 #ifdef GPS_INT