diff --git a/python/setup.py.in b/python/setup.py.in
index 3f906ed46f274f123cbf928f97ddea236db85842..d2fb95f27ff2f0673050e699316dde504dbf28f6 100644
--- a/python/setup.py.in
+++ b/python/setup.py.in
@@ -8,7 +8,7 @@ packages=['paddle',
           'paddle.trainer_config_helpers',
           'paddle.utils']
 
-if len(INTERNAL_PACKAGE) == 0:
+if len(INTERNAL_PACKAGE) != 0:
     packages.append(INTERNAL_PACKAGE)
 
 setup(name='paddle',