diff --git a/python/paddle/fluid/layers/nn.py b/python/paddle/fluid/layers/nn.py
index 31e12f9b27feb1..99ccb7e39151ac 100644
--- a/python/paddle/fluid/layers/nn.py
+++ b/python/paddle/fluid/layers/nn.py
@@ -9753,7 +9753,7 @@ def affine_channel(x,
                 'Bias': bias},
         attrs={"data_layout": data_layout},
         outputs={"Out": out})
-    return helper.append_activation(pre_activation)
+    return helper.append_activation(out)
 
 
 def similarity_focus(input, axis, indexes, name=None):