diff --git a/src/js/app.js b/src/js/app.js
index cab4bfc..fa0206a 100644
--- a/src/js/app.js
+++ b/src/js/app.js
@@ -431,7 +431,9 @@ module.exports = new Vue({
             this.display_units = this.config.settings["units"];
             try {
                 await api.put("config/save", this.config);
-                setImmediate(() => this.state['5vv'] = 6);
+                if(selected_tool == "pwncnc-vfd" && saveModbus){
+                    setImmediate(() => this.state['5vv'] = 6);
+                }
                 this.modified = false;
             } catch (error) {
                 console.error("Save failed:", error);