diff --git a/run.py b/run.py
index 2d5aa77c7417338451a04de28874d3188a7c604c..371c5b3d35e4aac147c6d7d88ed1dd5ceb7a9094 100644
--- a/run.py
+++ b/run.py
@@ -19,7 +19,7 @@ remote_client = FlatlandRemoteClient()
 #####################################################################
 def my_controller(obs, number_of_agents):
     _action = {}
-    for _idx range(number_of_agents):
+    for _idx in range(number_of_agents):
         _action[_idx] = np.random.randint(0, 5)
     return _action