diff --git a/paddle/fluid/API.spec b/paddle/fluid/API.spec
index 0fc5a5242d4ea4c2fba232fad790e71ace670a6a..c472bca325b909848d163a9d50aefba890a126bd 100644
--- a/paddle/fluid/API.spec
+++ b/paddle/fluid/API.spec
@@ -108,7 +108,7 @@ paddle.fluid.initializer.force_init_on_cpu (ArgSpec(args=[], varargs=None, keywo
 paddle.fluid.initializer.init_on_cpu (ArgSpec(args=[], varargs=None, keywords=None, defaults=None), ('document', 'eaa04fd68661a3af59abd0e19b3b6eda'))
 paddle.fluid.initializer.NumpyArrayInitializer ('paddle.fluid.initializer.NumpyArrayInitializer', ('document', '064f134a27c16372967d450f499762ab'))
 paddle.fluid.initializer.NumpyArrayInitializer.__init__ (ArgSpec(args=['self', 'value'], varargs=None, keywords=None, defaults=None), ('document', '6adf97f83acf6453d4a6a4b1070f3754'))
-paddle.fluid.layers.fc (ArgSpec(args=['input', 'size', 'num_flatten_dims', 'param_attr', 'bias_attr', 'act', 'is_test', 'name'], varargs=None, keywords=None, defaults=(1, None, None, None, False, None)), ('document', '1c74f52549814235077ecc34856a95eb'))
+paddle.fluid.layers.fc (ArgSpec(args=['input', 'size', 'num_flatten_dims', 'param_attr', 'bias_attr', 'act', 'name'], varargs=None, keywords=None, defaults=(1, None, None, None, None)), ('document', '0dc8181f14a33f91fbae9385a9b3d9fd'))
 paddle.fluid.layers.center_loss (ArgSpec(args=['input', 'label', 'num_classes', 'alpha', 'param_attr', 'update_center'], varargs=None, keywords=None, defaults=(True,)), ('document', '7129819d94625c6104054e8187768589'))
 paddle.fluid.layers.embedding (ArgSpec(args=['input', 'size', 'is_sparse', 'is_distributed', 'padding_idx', 'param_attr', 'dtype'], varargs=None, keywords=None, defaults=(False, False, None, None, 'float32')), ('document', 'd8e405486a1e4e189b51d6ee28d67b1e'))
 paddle.fluid.layers.dynamic_lstm (ArgSpec(args=['input', 'size', 'h_0', 'c_0', 'param_attr', 'bias_attr', 'use_peepholes', 'is_reverse', 'gate_activation', 'cell_activation', 'candidate_activation', 'dtype', 'name'], varargs=None, keywords=None, defaults=(None, None, None, None, True, False, 'sigmoid', 'tanh', 'tanh', 'float32', None)), ('document', '6d3ee14da70adfa36d85c40b18716ef2'))
diff --git a/python/paddle/fluid/layers/nn.py b/python/paddle/fluid/layers/nn.py
index 4d833b4a96ccda495bd2b231edd6796a10097ccf..7639a4052acd07ba8f3d0f6cd4d55314cd8a3c65 100644
--- a/python/paddle/fluid/layers/nn.py
+++ b/python/paddle/fluid/layers/nn.py
@@ -226,7 +226,6 @@ def fc(input,
        param_attr=None,
        bias_attr=None,
        act=None,
-       is_test=False,
        name=None):
     """
     **Fully Connected Layer**
@@ -300,7 +299,6 @@ def fc(input,
             of this layer. If it is set to False, no bias will be added to the output units.
             If it is set to None, the bias is initialized zero. Default: None.
         act (str, default None): Activation to be applied to the output of this layer.
-        is_test(bool): A flag indicating whether execution is in test phase.
         name (str, default None): The name of this layer.
 
     Returns: