diff --git a/src/LGraphCanvas.ts b/src/LGraphCanvas.ts
index 30135d0009..5ee1146d44 100644
--- a/src/LGraphCanvas.ts
+++ b/src/LGraphCanvas.ts
@@ -2550,7 +2550,7 @@ export class LGraphCanvas implements ConnectionColorContext {
         node,
         canvas: this,
       })
-      pointer.onDrag = eMove => widgetInstance.onDrag({
+      pointer.onDrag = eMove => widgetInstance.onDrag?.({
         e: eMove,
         node,
         canvas: this,