diff --git a/main/ZgatewayRF.ino b/main/ZgatewayRF.ino
index 28096a4..b16335b 100644
--- a/main/ZgatewayRF.ino
+++ b/main/ZgatewayRF.ino
@@ -94,7 +94,8 @@ void RFtoMQTT() {
       RFtoMQTTdiscovery(MQTTvalue);
 #  endif
       pub(subjectRFtoMQTT, RFdata);
-      Log.trace(F("Store val: %lu" CR), MQTTvalue);
+      // Casting "receivedSignal[o].value" to (unsigned long) because ArduinoLog doesn't support uint64_t for ESP's
+      Log.trace(F("Store val: %u" CR), (unsigned long)MQTTvalue);
       storeSignalValue(MQTTvalue);
       if (repeatRFwMQTT) {
         Log.trace(F("Pub RF for rpt" CR));
diff --git a/main/main.ino b/main/main.ino
index 84aca0d..0a2614e 100644
--- a/main/main.ino
+++ b/main/main.ino
@@ -1366,10 +1366,12 @@ void storeSignalValue(SIGNAL_SIZE_UL_ULL MQTTvalue) {
   // replace it by the new one
   receivedSignal[o].value = MQTTvalue;
   receivedSignal[o].time = now;
-  Log.trace(F("store code : %u / %u" CR), receivedSignal[o].value, receivedSignal[o].time);
+
+  // Casting "receivedSignal[o].value" to (unsigned long) because ArduinoLog doesn't support uint64_t for ESP's
+  Log.trace(F("store code : %u / %u" CR), (unsigned long)receivedSignal[o].value, receivedSignal[o].time);
   Log.trace(F("Col: val/timestamp" CR));
   for (int i = 0; i < struct_size; i++) {
-    Log.trace(F("mem code : %u / %u" CR), receivedSignal[i].value, receivedSignal[i].time);
+    Log.trace(F("mem code : %u / %u" CR), (unsigned long)receivedSignal[i].value, receivedSignal[i].time);
   }
 }
 
@@ -1379,7 +1381,7 @@ void storeSignalValue(SIGNAL_SIZE_UL_ULL MQTTvalue) {
 int getMin() {
   unsigned int minimum = receivedSignal[0].time;
   int minindex = 0;
-  for (int i = 0; i < struct_size; i++) {
+  for (int i = 1; i < struct_size; i++) {
     if (receivedSignal[i].time < minimum) {
       minimum = receivedSignal[i].time;
       minindex = i;
@@ -1410,16 +1412,14 @@ void receivingMQTT(char* topicOri, char* datacallback) {
   StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;
   JsonObject& jsondata = jsonBuffer.parseObject(datacallback);
 
-  if (strstr(topicOri, subjectMultiGTWKey) != NULL) // storing received value so as to avoid publishing this value if it has been already sent by this or another OpenMQTTGateway
-  {
 #if defined(ZgatewayRF) || defined(ZgatewayIR) || defined(ZgatewaySRFB) || defined(ZgatewaySRFB) || defined(ZgatewayWeatherStation)
-    SIGNAL_SIZE_UL_ULL data = 0;
-    data = jsondata.success() ? jsondata["value"] : STRTO_UL_ULL(datacallback, NULL, 10);
-    if (data != 0) {
+  if (strstr(topicOri, subjectMultiGTWKey) != NULL) { // storing received value so as to avoid publishing this value if it has been already sent by this or another OpenMQTTGateway
+    SIGNAL_SIZE_UL_ULL data = jsondata.success() ? jsondata["value"] : STRTO_UL_ULL(datacallback, NULL, 10);
+    if (data != 0 && !isAduplicateSignal(data)) {
       storeSignalValue(data);
     }
-#endif
   }
+#endif
 
   if (jsondata.success()) { // json object ok -> json decoding
     // log the received json