diff --git a/scripts/node_human_helper.py b/scripts/node_human_helper.py
index 266eeab7869de25b39ea86b233f3fa41718ee104..81e612ce3d954fc1039c8c2926f9668d32a63dcd 100755
--- a/scripts/node_human_helper.py
+++ b/scripts/node_human_helper.py
@@ -28,9 +28,6 @@ this.difficulty_service_proxy = None
 def helpUser(nextAction, board):
 	rospy.loginfo("I suggest action %s for board %s", nextAction, board)
 
-
-
-
 def helpCallback(msg):
 	id_human = ttt.getUserId()
 	id_ai = ttt.getAiId()
@@ -55,7 +52,7 @@ def callbackGripperActionExecuted(msg):
 	difficulty = msg_difficulty.data
 
 	if difficulty == 1:
-		helpCallback(Empty())
+		helpCallback(None)
 
 	if difficulty == 4:
 		# countdown