diff --git a/libs/community/langchain_community/agent_toolkits/powerbi/toolkit.py b/libs/community/langchain_community/agent_toolkits/powerbi/toolkit.py
index 424d967abbf..113ff9be53c 100644
--- a/libs/community/langchain_community/agent_toolkits/powerbi/toolkit.py
+++ b/libs/community/langchain_community/agent_toolkits/powerbi/toolkit.py
@@ -51,7 +51,7 @@ class PowerBIToolkit(BaseToolkit):
         examples: Optional. The examples for the prompt. Default is None.
         max_iterations: Optional. The maximum iterations to run. Default is 5.
         callback_manager: Optional. The callback manager. Default is None.
-        output_token_limit: Optional. The output token limit. Default is None.
+        output_token_limit: The output token limit. Default is 4000.
         tiktoken_model_name: Optional. The TikToken model name. Default is None.
     """
 
@@ -60,7 +60,7 @@ class PowerBIToolkit(BaseToolkit):
     examples: Optional[str] = None
     max_iterations: int = 5
     callback_manager: Optional[BaseCallbackManager] = None
-    output_token_limit: Optional[int] = None
+    output_token_limit: int = 4000
     tiktoken_model_name: Optional[str] = None
 
     model_config = ConfigDict(