diff --git a/backend/app/schemas/contest.py b/backend/app/schemas/contest.py
index 39a8456..e105fe0 100644
--- a/backend/app/schemas/contest.py
+++ b/backend/app/schemas/contest.py
@@ -27,7 +27,7 @@ class ContestResponse(BaseModel):
     start_time: datetime
     end_time: datetime
     is_active: bool
-    show_leaderboard_during_contest: bool
+    show_leaderboard_during_contest: bool = False
     created_by: int | None
     created_at: datetime
     is_running: bool
@@ -46,7 +46,7 @@ class ContestListResponse(BaseModel):
     start_time: datetime
     end_time: datetime
     is_active: bool
-    show_leaderboard_during_contest: bool
+    show_leaderboard_during_contest: bool = False
     is_running: bool
     has_ended: bool
     problems_count: int = 0