diff --git a/tools/third_party/pywebsocket3/mod_pywebsocket/stream.py b/tools/third_party/pywebsocket3/mod_pywebsocket/stream.py
index fc399f2a85b9fe..82d1ea619c074f 100644
--- a/tools/third_party/pywebsocket3/mod_pywebsocket/stream.py
+++ b/tools/third_party/pywebsocket3/mod_pywebsocket/stream.py
@@ -875,7 +875,7 @@ def close_connection(self,
             wait_response: True when caller want to wait the response.
         Raises:
             BadOperationException: when reason is specified with code None
-            or reason is not an instance of both str and unicode.
+                or reason is not an instance of both str and unicode.
         """
 
         if self._request.server_terminated: