diff --git a/ppdet/modeling/ops.py b/ppdet/modeling/ops.py
index 7597e250aab6d0f9412de97f78a16fa65bfd889a..9cb54edc21501bd3173fcc5331f7cdf8a95e0694 100644
--- a/ppdet/modeling/ops.py
+++ b/ppdet/modeling/ops.py
@@ -48,7 +48,6 @@ def _conv_offset(input, filter_size, stride, padding, act=None, name=None):
         name=name)
     return out
 
-
 def DeformConvNorm(input,
                    num_filters,
                    filter_size,