1 files changed, 2 insertions, 1 deletions
diff --git a/doc/summarize.py b/doc/summarize.py
index cfaec6f7a..bd7567d1b 100755
--- a/doc/summarize.py
+++ b/doc/summarize.py
@@ -7,6 +7,7 @@ Show a summary about which Numpy functions are documented and which are not.
 """
 
 import os, glob, re, sys, inspect, optparse
+import collections
 sys.path.append(os.path.join(os.path.dirname(__file__), 'sphinxext'))
 from sphinxext.phantom_import import import_phantom_module
 
@@ -134,7 +135,7 @@ def get_undocumented(documented, module, module_name=None, skip=[]):
 
         if full_name in skip: continue
         if full_name.startswith('numpy.') and full_name[6:] in skip: continue
-        if not (inspect.ismodule(obj) or callable(obj) or inspect.isclass(obj)):
+        if not (inspect.ismodule(obj) or isinstance(obj, collections.Callable) or inspect.isclass(obj)):
             continue
 
         if full_name not in documented: