diff --git a/src/LGraphCanvas.ts b/src/LGraphCanvas.ts
index 876ea29..6120fb1 100644
--- a/src/LGraphCanvas.ts
+++ b/src/LGraphCanvas.ts
@@ -2143,6 +2143,7 @@ export class LGraphCanvas {
       // Set the width of the line for isPointInStroke checks
       const { lineWidth } = this.ctx
       this.ctx.lineWidth = this.connections_width + 7
+      const dpi = window?.devicePixelRatio || 1
 
       for (const linkSegment of this.renderedPaths) {
         const centre = linkSegment._pos
@@ -2152,7 +2153,7 @@ export class LGraphCanvas {
         if (
           (e.shiftKey || e.altKey) &&
           linkSegment.path &&
-          this.ctx.isPointInStroke(linkSegment.path, x, y)
+          this.ctx.isPointInStroke(linkSegment.path, x * dpi, y * dpi)
         ) {
           if (e.shiftKey && !e.altKey) {
             const slot = linkSegment.origin_slot