diff --git a/libraries/MySensors/MySensor.h b/libraries/MySensors/MySensor.h
index 571367b..d96ec13 100644
--- a/libraries/MySensors/MySensor.h
+++ b/libraries/MySensors/MySensor.h
@@ -267,7 +267,7 @@ class MySensor : public RF24
 
   private:
 #ifdef DEBUG
-	char convBuf[MAX_PAYLOAD];
+	char convBuf[MAX_PAYLOAD*2+1];
 #endif
 	uint8_t failedTransmissions;
 	uint8_t *childNodeTable; // In memory buffer for routing information to other nodes. also stored in EEPROM