diff --git a/IPython/Extensions/ipy_completers.py b/IPython/Extensions/ipy_completers.py
index 10ed5dc..e42c263 100644
--- a/IPython/Extensions/ipy_completers.py
+++ b/IPython/Extensions/ipy_completers.py
@@ -92,7 +92,7 @@ def moduleList(path):
     folder_list = [p for p in folder_list  \
        if os.path.exists(os.path.join(path, p,'__init__.py'))\
            or p[-3:] in ('.py','.so')\
-           or p[-4:] in ('.pyc','.pyo')]
+           or p[-4:] in ('.pyc','.pyo','.pyd')]
 
     folder_list = [os.path.basename(p).split('.')[0] for p in folder_list]
     return folder_list