diff --git a/python/paddle/v2/fluid/nets.py b/python/paddle/v2/fluid/nets.py
index dc11afbc475cf5f5a4518b061837e0ecdd417b54..ee6f70b89940a1daa076c5617b05e5a845078d14 100644
--- a/python/paddle/v2/fluid/nets.py
+++ b/python/paddle/v2/fluid/nets.py
@@ -17,7 +17,7 @@ __all__ = [
     "simple_img_conv_pool",
     "sequence_conv_pool",
     "glu",
-    "",
+    "dot_product_attention",
 ]