diff --git a/git/cmd.py b/git/cmd.py
index 22b5ea99e..f58e6df5b 100644
--- a/git/cmd.py
+++ b/git/cmd.py
@@ -450,7 +450,7 @@ def refresh(cls, path: Union[None, PathLike] = None) -> bool:
                     )
 
                     if mode in warn:
-                        _logger.critical("WARNING: %s", err)
+                        _logger.critical(err)
                     else:
                         raise ImportError(err)
                 else: