diff --git a/lamps/LampGroup.py b/lamps/LampGroup.py
index 4bbbef6..f21c152 100644
--- a/lamps/LampGroup.py
+++ b/lamps/LampGroup.py
@@ -28,7 +28,7 @@ class LampGroup:
         self.currentLampPtr += 1
 
     def deactivateCurrent(self):
-        self.lamps[self.currentLamp].deactivate()
+        self.lamps[self.currentLampPtr].deactivate()
 
         if self.currentLampPtr == 0:
             return