diff --git a/web/scripts/app.js b/web/scripts/app.js
index 1a07d69b..aadc7d3d 100644
--- a/web/scripts/app.js
+++ b/web/scripts/app.js
@@ -492,7 +492,7 @@ export class ComfyApp {
 				}
 
 				if (this.imgs && this.imgs.length) {
-					const canvas = graph.list_of_graphcanvas[0];
+					const canvas = app.graph.list_of_graphcanvas[0];
 					const mouse = canvas.graph_mouse;
 					if (!canvas.pointer_is_down && this.pointerDown) {
 						if (mouse[0] === this.pointerDown.pos[0] && mouse[1] === this.pointerDown.pos[1]) {