diff --git a/centos7-system-install.sh b/centos7-system-install.sh
index a488d3b..5763d1a 100644
--- a/centos7-system-install.sh
+++ b/centos7-system-install.sh
@@ -24,13 +24,13 @@ EOF
 
 echo "1. 更新系统..."
 sudo yum remove docker \
-                  docker-client \
-                  docker-client-latest \
-                  docker-common \
-                  docker-latest \
-                  docker-latest-logrotate \
-                  docker-logrotate \
-                  docker-engine
+docker-client \
+docker-client-latest \
+docker-common \
+docker-latest \
+docker-latest-logrotate \
+docker-logrotate \
+docker-engine
 
 mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.cloud.tencent.com/repo/centos7_base.repo