1 files changed, 2 insertions, 2 deletions
diff --git a/Lib/copy_reg.py b/Lib/copy_reg.py
index 58d462b..4f77c6f 100644
--- a/Lib/copy_reg.py
+++ b/Lib/copy_reg.py
@@ -10,7 +10,7 @@ __all__ = ["pickle", "constructor",
 dispatch_table = {}
 
 def pickle(ob_type, pickle_function, constructor_ob=None):
-    if not callable(pickle_function):
+    if not hasattr(pickle_function, '__call__'):
         raise TypeError("reduction functions must be callable")
     dispatch_table[ob_type] = pickle_function
 
@@ -20,7 +20,7 @@ def pickle(ob_type, pickle_function, constructor_ob=None):
         constructor(constructor_ob)
 
 def constructor(object):
-    if not callable(object):
+    if not hasattr(object, '__call__'):
         raise TypeError("constructors must be callable")
 
 # Example: provide pickling support for complex numbers.