diff --git a/pandas/util/depr_module.py b/pandas/util/depr_module.py
index b438c91d980af..9c648b76fdad1 100644
--- a/pandas/util/depr_module.py
+++ b/pandas/util/depr_module.py
@@ -83,8 +83,7 @@ def __getattr__(self, name):
                     FutureWarning, stacklevel=2)
             else:
                 if deprmodto is None:
-                    deprmodto = "{modname}.{name}".format(
-                        modname=obj.__module__, name=name)
+                    deprmodto = obj.__module__
                 # The object is actually located in another module.
                 warnings.warn(
                     "{deprmod}.{name} is deprecated. Please use "