diff --git a/src/backend/core/services/lobby.py b/src/backend/core/services/lobby.py
index 2ddaf80d..36f2fb35 100644
--- a/src/backend/core/services/lobby.py
+++ b/src/backend/core/services/lobby.py
@@ -221,6 +221,12 @@ class LobbyService:
             color=color,
         )
 
+        try:
+            self.notify_participants(room_id=room_id)
+        except LobbyNotificationError:
+            # If room not created yet, there is no participants to notify
+            pass
+
         cache_key = self._get_cache_key(room_id, participant_id)
         cache.set(
             cache_key,
@@ -228,12 +234,6 @@ class LobbyService:
             timeout=settings.LOBBY_WAITING_TIMEOUT,
         )
 
-        try:
-            self.notify_participants(room_id=room_id)
-        except LobbyNotificationError:
-            # If room not created yet, there is no participants to notify
-            pass
-
         return participant
 
     def _get_participant(