diff --git a/productionMode.cpp b/productionMode.cpp
index 1a21d96..12f01c6 100644
--- a/productionMode.cpp
+++ b/productionMode.cpp
@@ -83,8 +83,11 @@ void callback(char* topic, byte* payload, unsigned int length) {
 #endif
 
     if (! strcmp(topic, configBlock.mqttTopic)) {
-    	int value = atoi(buffer);
-    	analogWrite(LIGHT_PIN, value);
+    	if (! strcmp(buffer, "ON")) {
+    		digitalWrite(LIGHT_PIN, HIGH);
+    	} else {
+    		digitalWrite(LIGHT_PIN, LOW);
+    	}
     }
   }
 }