diff --git a/demo/client/components/window/addonImageWindow.ts b/demo/client/components/window/addonImageWindow.ts
index 392b7177b..a18fb9c98 100644
--- a/demo/client/components/window/addonImageWindow.ts
+++ b/demo/client/components/window/addonImageWindow.ts
@@ -176,7 +176,7 @@ export class AddonImageWindow extends BaseWindow implements IControlWindow {
       //   }
       // }
 
-      const pos = (this._terminal as any)._core._mouseService!.getCoords(ev, (this._terminal as any)._core.screenElement!, this._terminal.cols, this._terminal.rows);
+      const pos = (this._terminal as any)._core._mouseCoordsService!.getCoords(ev, (this._terminal as any)._core.screenElement!, this._terminal.cols, this._terminal.rows);
       const x = pos[0] - 1;
       const y = pos[1] - 1;
       const canvas = ev.shiftKey