diff --git a/BresserWeatherSensorLWCfg.h b/BresserWeatherSensorLWCfg.h
index b513397..b133426 100644
--- a/BresserWeatherSensorLWCfg.h
+++ b/BresserWeatherSensorLWCfg.h
@@ -301,16 +301,20 @@ const uint8_t UBATT_SAMPLES = 10;
 // BLE battery o.k. threshold in percent
 #define BLE_BATT_OK 5
 
+/*
 // List of known sensors' BLE addresses
-// #define KNOWN_BLE_ADDRESSES \
-//     {                       \
-//         "a4:c1:38:b8:1f:7f" \
-//     }
-// #endif
+#define KNOWN_BLE_ADDRESSES \
+     {                       \
+         "a4:c1:38:b8:1f:7f" \
+     }
+*/
+
+// Empty list - BLE disabled
 #define KNOWN_BLE_ADDRESSES \
     {                       \
                             \
     }
+
 #endif
 
 /// Maximum number of 868 MHz sensors - should match the default configuration below
diff --git a/src/PayloadBLE.cpp b/src/PayloadBLE.cpp
index 3d09e96..e9bc89e 100644
--- a/src/PayloadBLE.cpp
+++ b/src/PayloadBLE.cpp
@@ -91,7 +91,7 @@ std::vector<std::string> PayloadBLE::getBleAddr(void)
     for (size_t i = 0; i < size; i += 6)
     {
         char addr[18];
-        snprintf(addr, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
+        snprintf(addr, 18, "%02x:%02x:%02x:%02x:%02x:%02x",
                  addrBytes[i], addrBytes[i + 1], addrBytes[i + 2], addrBytes[i + 3], addrBytes[i + 4], addrBytes[i + 5]);
         bleAddr.push_back(addr);
     }
@@ -106,19 +106,19 @@ void PayloadBLE::bleAddrInit(void)
 {
     knownBLEAddressesDef = KNOWN_BLE_ADDRESSES;
     knownBLEAddresses = getBleAddr();
-    if (knownBLEAddresses.size() == 0)
+    if (knownBLEAddresses.size() != 0)
+    {
+        log_d("Using BLE addresses from Preferences:");
+    }
+    else if (knownBLEAddressesDef.size() != 0)
     {
         // No addresses stored in Preferences, use default
         knownBLEAddresses = knownBLEAddressesDef;
         log_d("Using BLE addresses from BresserWeatherSensorLWCfg.h:");
     }
-    else if (knownBLEAddressesDef.size() == 0)
-    {
-        log_d("No BLE addresses specified.");
-    }
     else
     {
-        log_d("Using BLE addresses from Preferences:");
+        log_d("No BLE addresses specified.");
     }
     bleSensors = BleSensors(knownBLEAddresses);