fix typo

diff --git a/lib/sqlalchemy/engine/default.py b/lib/sqlalchemy/engine/default.py
index bae5777ebf413b448aa547312a9cdc2688db5427..d153d040cdbedf5ef5801c5a75b88330c30bf01c 100644 (file)
--- a/lib/sqlalchemy/engine/default.py
+++ b/lib/sqlalchemy/engine/default.py
@@ -566,7 +566,7 @@ class DefaultDialect(Dialect):
                 % (self.label_length, self.max_identifier_length)
             )
 
-    def on_connect(self) -> Optional[Callable[[Any]]]:
+    def on_connect(self) -> Optional[Callable[[Any], None]]:
         # inherits the docstring from interfaces.Dialect.on_connect
         return None