diff --git a/models/rank/dien/model.py b/models/rank/dien/model.py
index ee39ff93ac26c01bfcd0f4ebd4ab9b3c765e4688..0a2d1c7f6b18158492ed5c739203da39c5181f49 100755
--- a/models/rank/dien/model.py
+++ b/models/rank/dien/model.py
@@ -248,17 +248,18 @@ class Model(ModelBase):
                 keep_dim=True)
             
             test_neg = fluid.layers.reduce_sum(
-                fluid.layers.log(
-                    fluid.layers.sigmoid(
-                        fluid.layers.reduce_sum(
-                            gru_out_pad[:, start_value:seq_shape[1] - 1, :]
-                            * neg_seq_pad[:, start_value + 1:seq_shape[
-                                1], :],
-                            dim=2,
-                            keep_dim=True))),
-                dim=2),
-            dim=1,
-            keep_dim=True)
+                fluid.layers.reduce_sum(
+                    fluid.layers.log(
+                        fluid.layers.sigmoid(
+                            fluid.layers.reduce_sum(
+                                gru_out_pad[:, start_value:seq_shape[1] - 1, :]
+                                * neg_seq_pad[:, start_value + 1:seq_shape[
+                                    1], :],
+                                dim=2,
+                                keep_dim=True))),
+                    dim=2),
+                dim=1,
+                keep_dim=True)
             
             aux_loss = fluid.layers.mean(test_neg + test_pos)