diff --git a/WifiControlSensor/dry_sensor.h b/WifiControlSensor/dry_sensor.h
index 2d73a2f..11105a9 100644
--- a/WifiControlSensor/dry_sensor.h
+++ b/WifiControlSensor/dry_sensor.h
@@ -5,7 +5,7 @@ int DrySetup(int powerGPIO);
 int DryGetMeasure(int &dry);
 bool DryIsConnected(){return true;}
 #else
-int DrySetup(int powerGPIO){return 0;}
+int DrySetup(int powerGPIO){return -1;}
 int DryGetMeasure(int){return -1;}
 bool DryIsConnected(){return false;}
 #endif