diff --git a/libs/community/langchain_community/chat_models/perplexity.py b/libs/community/langchain_community/chat_models/perplexity.py
index 6538f7f3e06..e03f820cddf 100644
--- a/libs/community/langchain_community/chat_models/perplexity.py
+++ b/libs/community/langchain_community/chat_models/perplexity.py
@@ -70,7 +70,7 @@ class ChatPerplexity(BaseChatModel):
     request_timeout: Optional[Union[float, Tuple[float, float]]] = Field(
         None, alias="timeout"
     )
-    """Timeout for requests to PerplexityChat completion API. Default is 600 seconds."""
+    """Timeout for requests to PerplexityChat completion API. Default is None."""
     max_retries: int = 6
     """Maximum number of retries to make when generating."""
     streaming: bool = False