diff --git a/deploy/download_offline_res.sh b/deploy/download_offline_res.sh
index 10ab9686471cd31edf9fbd5c20939c19f218f96f..c52ee7766c80075c8602bd084d17111eddf4eb3f 100755
--- a/deploy/download_offline_res.sh
+++ b/deploy/download_offline_res.sh
@@ -93,7 +93,7 @@ function docker_pull_image() {
     if ! docker --version >/dev/null 2>&1 ; then
          echo_warn "Docker cmd not found, try installing docker firstly"
          yum install docker -y
-         [ $? -ne 0 ] ; echo_err_exit "Error: fail to install docker"
+         [ $? -ne 0 ] && echo_err_exit "Error: fail to install docker"
     fi
     config_docker
     docker pull ${DOCKER_HUB_TAG_PREFIX}/"${tag_name}"