diff --git a/dist/install.sh b/dist/install.sh
index 728ba4ad770e106e5a5251786bc1b5b8511c18f7..784271ff464be8515f7c1dc6de7b94f5792a1794 100755
--- a/dist/install.sh
+++ b/dist/install.sh
@@ -7,7 +7,6 @@
 
 mirror_site="${MIRROR_SITE:-https://mirrors.openanolis.cn}"
 
-jsonfile="/var/log/centostoanolis.json"
 report_error_in_jsonfile() {
   unixtime=`date +%s`
   errMsg_inline=$(echo "$3" | tr -d '\n\r\t"\\')
@@ -26,11 +25,10 @@ disable_migration_repo() {
 
 # config epel
 epel_repo_config() {
-  rpm -q epel-release && return 0
-  [ -f /etc/yum.repos.d/epel.repo ] && return 0
+  rpm -q epel-release && [ -f /etc/yum.repos.d/epel.repo ] && return 0
   # maybe using filename epel-7.repo since this guide https://developer.aliyun.com/mirror/epel
-  [ -f /etc/yum.repos.d/epel-7.repo ] && return 0
-  [ -f /etc/yum.repos.d/CentOS-Linux-epel.repo ] && return 0
+  rpm -q epel-release && [ -f /etc/yum.repos.d/epel-7.repo ] && return 0
+  rpm -q epel-release && [ -f /etc/yum.repos.d/CentOS-Linux-epel.repo ] && return 0
 
   major_release=`rpm --eval '%{centos_ver}'`
   [ "$?" -eq 0 ] || {