diff --git a/dto/responses.py b/dto/responses.py
index b91b9e2..78dfe7f 100644
--- a/dto/responses.py
+++ b/dto/responses.py
@@ -21,7 +21,7 @@ class GameStartResponseWithBotDecisionDTO(BaseModel):
     client_data: Dict[str, Any]
     score: int
     bot_decision: Literal["Accept", "Reject"]
-    bot_reason: str
+    bot_reason: Optional[str]
 
 
 class GameDecisionResponseDTO(BaseModel):