diff --git a/setup_cups.sh b/setup_cups.sh
index ac746a9..99f1e81 100755
--- a/setup_cups.sh
+++ b/setup_cups.sh
@@ -371,6 +371,9 @@ network:
         addresses: [$dns_list]
 EOF
 
+    # 设置正确的权限（避免 "Permissions too open" 警告）
+    chmod 600 /etc/netplan/01-static-ip.yaml
+
     # 删除其他可能冲突的配置
     for f in /etc/netplan/*.yaml; do
         if [ "$f" != "/etc/netplan/01-static-ip.yaml" ] && [ -f "$f" ]; then
@@ -724,7 +727,7 @@ install_chinese_templates() {
 
         for tmpl in "${templates[@]}"; do
             if wget -q -O "$templates_dir/$tmpl" "$gitee_base/$tmpl" 2>/dev/null; then
-                ((success_count++))
+                success_count=$((success_count + 1))
             fi
             # 显示进度
             echo -ne "\r  下载进度: $success_count/$total"