diff --git a/plugins/labhub.py b/plugins/labhub.py
index ca0b3502..9745fe16 100644
--- a/plugins/labhub.py
+++ b/plugins/labhub.py
@@ -110,7 +110,7 @@ def is_team_member(self, user, team):
 
     @staticmethod
     def is_room_member(invitee, msg):
-        return invitee in msg.frm.room.occupants
+        return GitterRoomOccupant(username = invitee) in msg.frm.room.occupants
 
     # Ignore LineLengthBear, PycodestyleBear
     @re_botcmd(pattern=r'^(?:(?:welcome)|(?:inv)|(?:invite))\s+@?([\w-]+)(?:\s+(?:to)\s+(\w+))?$',