diff --git a/chch-power.py b/chch-power.py
index 5915a17..9cfd9f4 100644
--- a/chch-power.py
+++ b/chch-power.py
@@ -88,7 +88,7 @@ def exec_chch_button_cmd(event):
         # '.' room specific function
         if count == 1:
             if event.pin_num == 0:
-                call(["/home/automation/chch-power/light.sh"])
+                call(["/home/automation/chch-power/light.sh","1"])
             else:
                 sys.stderr.write("No room specific function for room " + str(event.pin_num) + "\n")
         # '. .' toggle current room