diff --git a/docs/installation/env_requirement.rst b/docs/installation/env_requirement.rst
index dac154194aef8be952376b769b7d540cf6a01111..82ae473070c0d4126959b775f49a6ecf6c88cdf6 100644
--- a/docs/installation/env_requirement.rst
+++ b/docs/installation/env_requirement.rst
@@ -53,7 +53,7 @@ Optional dependencies
       - apt-get install android-tools-adb
       - Required by Android run, >= 1.0.32
     * - TensorFlow
-      - pip install -I tensorflow==1.6.0
+      - pip install -I tensorflow==1.8.0
       - Required by TensorFlow model
     * - Docker
       - `docker installation guide <https://docs.docker.com/install/linux/docker-ce/ubuntu/#set-up-the-repository>`__
diff --git a/docs/installation/manual_setup.rst b/docs/installation/manual_setup.rst
index 764ae9c49e3fd79af99302ee0606253e6409035a..0c564b76ae90af1a6e2318da432e7d31c87602dd 100644
--- a/docs/installation/manual_setup.rst
+++ b/docs/installation/manual_setup.rst
@@ -65,7 +65,7 @@ Install TensorFlow (Optional)
 
 .. code:: sh
 
-    pip install -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com tensorflow==1.6.0
+    pip install -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com tensorflow==1.8.0
 
 
 Install Caffe (Optional)
diff --git a/mace/python/tools/converter_tool/tensorflow_converter.py b/mace/python/tools/converter_tool/tensorflow_converter.py
index 39bcd3b88eb86d7024f4ee9d20612d46ac6cf057..9390d5a11af62f2b9cbbe55f2c98ecd4b23ed1a8 100644
--- a/mace/python/tools/converter_tool/tensorflow_converter.py
+++ b/mace/python/tools/converter_tool/tensorflow_converter.py
@@ -806,7 +806,7 @@ class TensorflowConverter(base_converter.ConverterInterface):
 
         reduce_type_arg = op.arg.add()
         reduce_type_arg.name = MaceKeyword.mace_reduce_type_str
-        reduce_type_arg.i = ReduceType.MEAN
+        reduce_type_arg.i = ReduceType.MEAN.value
 
         axis_arg = op.arg.add()
         axis_arg.name = MaceKeyword.mace_axis_str