diff --git a/include/corona.h b/include/corona.h
index a11990d5..9af0d314 100644
--- a/include/corona.h
+++ b/include/corona.h
@@ -9,7 +9,7 @@
 #include <map>
 
 bool cwa_init(void);
-bool cwa_mac_add(uint16_t hashedmac);
+void cwa_mac_add(uint16_t hashedmac);
 void cwa_clear(void);
 uint16_t cwa_report(void);
 
diff --git a/src/blecsan.cpp b/src/blecsan.cpp
index bfc8adc8..73110fdd 100644
--- a/src/blecsan.cpp
+++ b/src/blecsan.cpp
@@ -160,14 +160,15 @@ IRAM_ATTR void gap_callback_handler(esp_gap_ble_cb_event_t event,
       }
 #endif
 
-      // hash and add this device and show new count total if it was not previously added
-      hashedmac = mac_add((uint8_t *)p->scan_rst.bda, p->scan_rst.rssi, MAC_SNIFF_BLE);
+      // hash and add this device and show new count total if it was not
+      // previously added
+      hashedmac =
+          mac_add((uint8_t *)p->scan_rst.bda, p->scan_rst.rssi, MAC_SNIFF_BLE);
 
 #if (COUNT_ENS)
       // check for ens signature
-      if (0 == strncmp((const char *)p->scan_rst.ble_adv, ensMagicBytes, 4)) {
+      if (0 == strncmp((const char *)p->scan_rst.ble_adv, ensMagicBytes, 4))
         cwa_mac_add(hashedmac);
-      }
 #endif
 
       /* to be improved in vendorfilter if:
diff --git a/src/corona.cpp b/src/corona.cpp
index 00619191..632bff1e 100644
--- a/src/corona.cpp
+++ b/src/corona.cpp
@@ -15,10 +15,10 @@ static const char TAG[] = __FILE__;
 
 #include "corona.h"
 
-// When to forget old senders.
+// When to forget old senders ** currently not used **
 #define FORGET_AFTER_MINUTES 2
 
-// array of timestamps for seen notifiers
+// array of timestamps for seen notifiers: hash -> timestamp[ms]
 static std::map<uint16_t, unsigned long> cwaSeenNotifiers;
 
 // Remove notifiers last seen over FORGET_AFTER_MINUTES ago.
@@ -48,23 +48,8 @@ bool cwa_init(void) {
   return true;
 }
 
-// similar to mac_add(), found in macsniff.cpp, for comments look into this function
-bool cwa_mac_add(uint16_t hashedmac) {
-
-  bool added = false;
-  
-  ESP_LOGD(TAG, "hashed ENS mac = %X, ENS count = %d (total=%d)", hashedmac,
-           cwaSeenNotifiers.count(hashedmac), cwaSeenNotifiers.size());
-  added = !(cwaSeenNotifiers.count(hashedmac) > 0);
-
-  // Count only if this ENS MAC was not yet seen
-  if (added) {
-    cwaSeenNotifiers[hashedmac] = millis(); // last seen at ....
-    ESP_LOGD(TAG, "added device with active ENS");
-  }
-
-  // True if ENS MAC was new
-  return added;
+void cwa_mac_add(uint16_t hashedmac) {
+  cwaSeenNotifiers[hashedmac] = millis(); // hash last seen at ....
 }
 
 #endif