diff --git a/python/paddle/fluid/param_attr.py b/python/paddle/fluid/param_attr.py
index 43f2ac91abc79b893678167f5566dbe28545d980..150168bc3ee4e89de3fcacaf1a2150923ac056d0 100644
--- a/python/paddle/fluid/param_attr.py
+++ b/python/paddle/fluid/param_attr.py
@@ -239,7 +239,7 @@ class WeightNormParamAttr(ParamAttr):
             two method: :ref:`api_paddle_fluid_regularizer_L1Decay` ,
             :ref:`api_paddle_fluid_regularizer_L2DecayRegularizer`.
             If regularizer isralso set in ``optimizer``
-            (such as :ref:`api_paddle_optimizer_SGDOptimizer` ), that regularizer setting in
+            (such as :ref:`api_paddle_optimizer_SGD` ), that regularizer setting in
             optimizer will be ignored. Default None, meaning there is no regularization.
         trainable(bool, optional): Whether this parameter is trainable. Default True.
         do_model_average(bool, optional): Whether this parameter should do model average.