diff --git a/fhem/contrib/arduino/ArduCounter3.30.ino b/fhem/contrib/arduino/ArduCounter3.30.ino
index 85798e228..d9a18072c 100755
--- a/fhem/contrib/arduino/ArduCounter3.30.ino
+++ b/fhem/contrib/arduino/ArduCounter3.30.ino
@@ -104,7 +104,7 @@
 */ 
 
 /* Remove this before compiling */
-#define TestConfig // include my SSID / secret
+/* #define TestConfig // include my SSID / secret
 */
 
 
 /* allow printing of every pin change to Serial */