diff --git a/main.c b/main.c
index 499a948..ff8d1bc 100644
--- a/main.c
+++ b/main.c
@@ -82,7 +82,10 @@ void send_info(void){
         sprintf(msg, "False");
     mqtt_pub(&mqtt_client, "/Filamentanlage/05_Abzug/state/abzug/onoff", msg, strlen(msg));
 
-    ltoa(kraftsensor_value, msg, 10);
+    if(kraftsensor_valid)
+        ltoa(kraftsensor_value, msg, 10);
+    else
+        msg[0] = '0';
     mqtt_pub(&mqtt_client, "/Filamentanlage/05_Abzug/state/kraft", msg, strlen(msg));
 
     ltoa(taenzer_state.pos, msg, 10);