diff --git a/src/browser/CoreBrowserTerminal.ts b/src/browser/CoreBrowserTerminal.ts
index 248b99a21..e66f4c4bf 100644
--- a/src/browser/CoreBrowserTerminal.ts
+++ b/src/browser/CoreBrowserTerminal.ts
@@ -618,11 +618,9 @@ export class CoreBrowserTerminal extends CoreTerminal implements ITerminal {
     this._register(addDisposableListener(this.element, 'mousedown', (e: MouseEvent) => this._selectionService!.handleMouseDown(e)));
 
     // apply mouse event classes set by escape codes before terminal was attached
-    if (this.mouseStateService.areMouseEventsActive) {
-      if (!this.options.altClickForMouseEvents) {
-        this._selectionService.disable();
-        this.element.classList.add('enable-mouse-events');
-      }
+    if (this.mouseStateService.areMouseEventsActive && !this.options.altClickForMouseEvents) {
+      this._selectionService.disable();
+      this.element.classList.add('enable-mouse-events');
     } else {
       this._selectionService.enable();
     }