diff --git a/cns/cns.sh b/cns/cns.sh
index a687354..7d370e1 100644
--- a/cns/cns.sh
+++ b/cns/cns.sh
@@ -121,7 +121,7 @@ InstallInit() {
 }
 
 AddAutoStart() {
-	if [ -n "$rcCommon" ]; then
+	if [ -n "$rcCommon &>/dev/null" ]; then
 		if /etc/init.d/Acns enable; then
 			echo '已添加开机自启, 如需关闭请执行: /etc/init.d/Acns disable'
 			return
@@ -174,7 +174,7 @@ Install() {
 		\r	cns udp flag:\033[35G${cns_udp_flag:-httpUDP}
 		\r	cns encrypt password:\033[35G${cns_encrypt_password}
 		\r	cns tls server port:\033[35G${cns_tls_port}
-		\r`[ -f /etc/init.d/Acns ] && /etc/init.d/Acns usage || \"$cns_install_dir/cns.init\" usage`\033[0m
+		\r`[ -f /etc/init.d/Acns ] && /etc/init.d/Acns usage || \"$cns_install_dir/cns.init\" usage`
 		\r`AddAutoStart`\033[0m"
 }