diff --git a/main/ZgatewayLORA.ino b/main/ZgatewayLORA.ino
index a269357..b13fedc 100644
--- a/main/ZgatewayLORA.ino
+++ b/main/ZgatewayLORA.ino
@@ -97,7 +97,7 @@ void LORAtoMQTT(){
       int codingRateDenominator = LORAdata["codingrate"]|LORA_CODING_RATE;
       int preambleLength = LORAdata["preamblelength"]|LORA_PREAMBLE_LENGTH;
       byte syncWord = LORAdata["syncword"]|LORA_SYNC_WORD;
-      bool Crc = LORAdata["enablecrc"];
+      bool Crc = LORAdata["enablecrc"]|DEFAULT_CRC;
       if (message) {
         LoRa.setTxPower(txPower);
         LoRa.setFrequency(frequency);
diff --git a/main/config_LORA.h b/main/config_LORA.h
index 5787c94..2f9ccfa 100644
--- a/main/config_LORA.h
+++ b/main/config_LORA.h
@@ -43,6 +43,7 @@ extern void MQTTtoLORA(char * topicOri, JsonObject& RFdata);
 #define LORA_CODING_RATE      5
 #define LORA_PREAMBLE_LENGTH  8
 #define LORA_SYNC_WORD        0x12
+#define DEFAULT_CRC           true
 
 #define repeatLORAwMQTT false // do we repeat a received signal by using mqtt with LORA gateway