diff --git a/tasmota/xdrv_10_scripter.ino b/tasmota/xdrv_10_scripter.ino
index 645aa039c..04d6f322f 100755
--- a/tasmota/xdrv_10_scripter.ino
+++ b/tasmota/xdrv_10_scripter.ino
@@ -2402,9 +2402,9 @@ chknext:
           rstring[0] = 0;
           int8_t index = fvar;
 #ifdef MQTT_DATA_STRING
-          char *wd = TasmotaGlobal.mqtt_data;
+          char *wd = (char*)TasmotaGlobal.mqtt_data.c_str();
 #else
-          char *wd = TasmotaGlobal.mqtt_data.c_str();
+          char *wd = TasmotaGlobal.mqtt_data;
 #endif
           strlcpy(rstring, wd, glob_script_mem.max_ssize);
           if (index) {
diff --git a/tasmota/xdrv_13_display.ino b/tasmota/xdrv_13_display.ino
index 54ee98647..7334d1ece 100755
--- a/tasmota/xdrv_13_display.ino
+++ b/tasmota/xdrv_13_display.ino
@@ -1302,7 +1302,7 @@ void DisplayDTVarsTeleperiod(void) {
     char *json = (char*)malloc(jlen + 2);
     if (json) {
 #ifdef MQTT_DATA_STRING
-      strlcpy(json, TasmotaGlobal.mqtt_data.c_str(), jlen + 1);
+      strlcpy(json, (char*)TasmotaGlobal.mqtt_data.c_str(), jlen + 1);
 #else
       strlcpy(json, TasmotaGlobal.mqtt_data, jlen + 1);
 #endif
@@ -1325,7 +1325,7 @@ void get_dt_mqtt(void) {
     ResponseJsonEnd();
   }
 #ifdef MQTT_DATA_STRING
-  get_dt_vars(TasmotaGlobal.mqtt_data.c_str());
+  get_dt_vars((char*)TasmotaGlobal.mqtt_data.c_str());
 #else
   get_dt_vars(TasmotaGlobal.mqtt_data);
 #endif