diff --git a/resources/mixin.yaml b/resources/mixin.yaml
index 5d86dbb..9cd063c 100644
--- a/resources/mixin.yaml
+++ b/resources/mixin.yaml
@@ -2,6 +2,8 @@
 system-proxy:
   enable: true
 
+mixed-port: 7890
+
 # Web 控制台配置
 external-controller: "0.0.0.0:9090"
 external-ui: public
diff --git a/script/common.sh b/script/common.sh
index a3705d4..2cce2a3 100644
--- a/script/common.sh
+++ b/script/common.sh
@@ -134,8 +134,7 @@ _get_random_port() {
 }
 
 function _get_proxy_port() {
-    local mixed_port=$(sudo "$BIN_YQ" '.mixed-port // ""' $CLASH_CONFIG_RUNTIME)
-    MIXED_PORT=${mixed_port:-7890}
+    MIXED_PORT=$(sudo "$BIN_YQ" '.mixed-port' $CLASH_CONFIG_RUNTIME)
 
     _is_already_in_use "$MIXED_PORT" "$BIN_KERNEL_NAME" && {
         local newPort=$(_get_random_port)