diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8115af858..cc0d2c346 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -11,7 +11,7 @@ jobs:
       - image: ossrs/dev
     steps:
       - checkout
-      - run: cd trunk && ./configure --gcov --without-research --without-librtmp && make && bash auto/coverage.sh
+      - run: cd trunk && ./configure --gcov --without-research --without-librtmp && make && ./objs/srs_utest && bash auto/coverage.sh
 workflows:
   version: 2
   build_and_test:
diff --git a/README.md b/README.md
index 9aeb19d25..1070e45d2 100755
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # Simple-RTMP-Server
 
 [![CircleCI](https://circleci.com/gh/ossrs/srs/tree/3.0release.svg?style=svg&circle-token=1ef1d5b5b0cde6c8c282ed856a18199f9e8f85a9)](https://circleci.com/gh/ossrs/srs/tree/3.0release)
+[![codecov](https://codecov.io/gh/ossrs/srs/branch/3.0release/graph/badge.svg)](https://codecov.io/gh/ossrs/srs)
 [![Wechat](https://cloud.githubusercontent.com/assets/2777660/22814959/c51cbe72-ef92-11e6-81cc-32b657b285d5.png)](https://github.com/ossrs/srs/wiki/v1_CN_Contact#wechat)
 [<img width="52" alt="Skype" src="https://cloud.githubusercontent.com/assets/2777660/24329166/3821a328-1230-11e7-844a-506a5d17dd3d.png">](https://github.com/ossrs/srs/wiki/v1_EN_Contact#skype-or-gitter)
 
diff --git a/trunk/auto/coverage.sh b/trunk/auto/coverage.sh
index 21a399117..79eef9dfe 100644
--- a/trunk/auto/coverage.sh
+++ b/trunk/auto/coverage.sh
@@ -1,11 +1,9 @@
 #!/bin/bash
 
 # In .circleci/config.yml, generate *.gcno with
-#   ./configure --gcov --without-research --without-librtmp
-
-# Generate *.gcda
-./objs/srs_utest
-ret=$?; if [[ $ret -ne 0 ]]; then echo "Run SRS utest failed, ret=$ret"; exit $ret; fi
+#       ./configure --gcov --without-research --without-librtmp
+# and generate *.gcda by
+#       ./objs/srs_utest
 
 # Collect all *.gcno and *.gcda to objs/cover.
 (mkdir -p objs/cover && cd objs/cover &&