diff --git a/python/setup.py.in b/python/setup.py.in
index 26f3c5aeaa17f60ccdac849e589c779a73138088..200b96ec54ee5daeb905e155d0b7b57ab7740250 100644
--- a/python/setup.py.in
+++ b/python/setup.py.in
@@ -142,7 +142,7 @@ if os.name == 'nt':
 
 if '${WITH_FLUID_ONLY}'== 'OFF':
     package_data['paddle.v2.master']=['libpaddle_master' + ext_name]
-    package_data['py_paddle']=['*.py','_swig_paddle' +  + ext_name]
+    package_data['py_paddle']=['*.py','_swig_paddle' + ext_name]
 
 package_dir={
     '': '${PADDLE_BINARY_DIR}/python',