diff --git a/Lib/pickle.py b/Lib/pickle.py
index 2d764980cdf..c6c151b2065 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -1153,7 +1153,7 @@ class _Pickler:
             except UnicodeEncodeError:
                 raise PicklingError(
                     "can't pickle global identifier '%s.%s' using "
-                    "pickle protocol %i" % (module, name, self.proto)) from None
+                    "pickle protocol %i" % (module_name, name, self.proto)) from None
 
     def save_type(self, obj):
         if obj is type(None):