diff --git a/cpp/CHANGELOG.md b/cpp/CHANGELOG.md
index 49612ccdad..1ebe05eb21 100644
--- a/cpp/CHANGELOG.md
+++ b/cpp/CHANGELOG.md
@@ -5,6 +5,7 @@ Please mark all change in change log and use the ticket from JIRA.
 # Milvus 0.3.0 (TBD)
 
 ## Bug
+- MS-104 - Fix unittest lcov execution error
 - MS-102 - Fix build script file condition error
 - MS-80 - Fix server hang issue
 - MS-89 - Fix compile failed, libgpufaiss.a link missing
diff --git a/cpp/build.sh b/cpp/build.sh
index f1936559ad..a7ece5fee6 100755
--- a/cpp/build.sh
+++ b/cpp/build.sh
@@ -84,10 +84,10 @@ if [[ ${BUILD_TYPE} != "Debug" ]]; then
     strip src/milvus_server
 fi
 
+make install || exit 1
+
 if [[ ${BUILD_COVERAGE} == "ON" ]]; then
     cd -
     bash `pwd`/coverage.sh
     cd -
 fi
-
-make install