diff --git a/src/lorawan.cpp b/src/lorawan.cpp
index 48781d8c..f06ba289 100644
--- a/src/lorawan.cpp
+++ b/src/lorawan.cpp
@@ -12,6 +12,12 @@ static const char TAG[] = "lora";
 #warning CLOCK_ERROR_PROCENTAGE value in lmic_config.h is too high; values > 7 will cause side effects
 #endif
 
+#if (TIME_SYNC_LORAWAN)
+#ifndef LMIC_ENABLE_DeviceTimeReq
+#define LMIC_ENABLE_DeviceTimeReq 1
+#endif
+#endif
+
 osjob_t sendjob;
 QueueHandle_t LoraSendQueue;
 
diff --git a/src/timesync.cpp b/src/timesync.cpp
index b38f8c34..92af0906 100644
--- a/src/timesync.cpp
+++ b/src/timesync.cpp
@@ -9,7 +9,7 @@ algorithm in applications without granted license by the patent holder.
 
 */
 
-#ifdef TIME_SYNC_TIMESERVER
+#if(TIME_SYNC_TIMESERVER)
 
 #include "timesync.h"