diff --git a/main.ts b/main.ts
index 82710a5..57eabaf 100644
--- a/main.ts
+++ b/main.ts
@@ -12,6 +12,7 @@ import { configureDelimLookup } from "src/utils";
 
 export default class ExtendedMarkdownSyntax extends Plugin {
     settings: PluginSettings;
+    areSettingsChanged: boolean = false;
     async onload() {
         await this.loadSettings();
         this.addSettingTab(new SettingTab(this.app, this));
@@ -29,6 +30,10 @@ export default class ExtendedMarkdownSyntax extends Plugin {
         this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData());
     }
     async saveSettings() {
+        if (!this.areSettingsChanged) {
+            this.areSettingsChanged = true;
+            new Notice("You must restart the app to take the effect")
+        }
         await this.saveData(this.settings);
     }
     onunload(): void {
diff --git a/src/settings/interface/SettingTab.ts b/src/settings/interface/SettingTab.ts
index 7563aa9..bbd8575 100644
--- a/src/settings/interface/SettingTab.ts
+++ b/src/settings/interface/SettingTab.ts
@@ -18,6 +18,7 @@ export class SettingTab extends PluginSettingTab {
     display(): void {
         let { containerEl } = this,
             { settings } = this.plugin;
+        this.plugin.areSettingsChanged = false;
         containerEl.empty();
         new Setting(containerEl)
             .setName("Insertion (underline)")
@@ -81,8 +82,5 @@ export class SettingTab extends PluginSettingTab {
                 toggle.setValue(settings.colorButton);
                 toggle.onChange((val) => { settings.colorButton = val; this.plugin.saveSettings() });
             });
-        new Setting(containerEl)
-            .setDesc("You must restart the app to take the effect.")
-            .descEl.addClass("warning-desc");
     }
 }
\ No newline at end of file