diff --git a/tensorlayer/layers/core.py b/tensorlayer/layers/core.py
index 118ed0dc8..ea9a2be96 100644
--- a/tensorlayer/layers/core.py
+++ b/tensorlayer/layers/core.py
@@ -344,7 +344,7 @@ def __delitem__(self, key):
 
     def __setattr__(self, key, value):
         if isinstance(value, Layer):
-            value._nodes_fixed = True
+            value._fix_nodes_for_layers()
             if self._layers is None:
                 self._layers = []
             self._layers.append(value)