diff --git a/src/ScreenCapture.tsx b/src/ScreenCapture.tsx
index c94df06..311cf1d 100644
--- a/src/ScreenCapture.tsx
+++ b/src/ScreenCapture.tsx
@@ -134,6 +134,8 @@ export default class ScreenCapture extends Component<Props, State> {
     
     cropWidth *= window.devicePixelRatio;
     cropHeigth *= window.devicePixelRatio;
+    cropPositionLeft *= window.devicePixelRatio;
+    cropPositionTop *= window.devicePixelRatio;
 
     this.setState({
       crossHairsTop: e.clientY,