diff --git a/examples/python/simple_meeting.py b/examples/python/simple_meeting.py
index c8e45c334c..9ef8689bbc 100644
--- a/examples/python/simple_meeting.py
+++ b/examples/python/simple_meeting.py
@@ -100,7 +100,7 @@ def main():
                                                         name)
     room_meeting_copies[r] = room_meeting_copy
 
-  meeting_location = solver.IntVar(all_rooms, 'meeting location')
+  meeting_location = solver.IntVar(list(all_rooms), 'meeting location')
 
   all_people_calendars = {}
   all_people_presence = {}