diff --git a/lib/src/qr_scanner_overlay_shape.dart b/lib/src/qr_scanner_overlay_shape.dart
index a0a4159..1d233f1 100644
--- a/lib/src/qr_scanner_overlay_shape.dart
+++ b/lib/src/qr_scanner_overlay_shape.dart
@@ -14,15 +14,17 @@ class QrScannerOverlayShape extends ShapeBorder {
     double? cutOutWidth,
     double? cutOutHeight,
     this.cutOutBottomOffset = 0,
-  }): cutOutWidth = cutOutWidth ?? cutOutSize ?? 250,
-      cutOutHeight = cutOutHeight ?? cutOutSize ?? 250 {
+  })  : cutOutWidth = cutOutWidth ?? cutOutSize ?? 250,
+        cutOutHeight = cutOutHeight ?? cutOutSize ?? 250 {
     assert(
-      borderLength <= min(this.cutOutWidth, this.cutOutHeight) / 2 + borderWidth * 2,
+      borderLength <=
+          min(this.cutOutWidth, this.cutOutHeight) / 2 + borderWidth * 2,
       "Border can't be larger than ${min(this.cutOutWidth, this.cutOutHeight) / 2 + borderWidth * 2}",
     );
-    assert((cutOutSize != null && cutOutWidth == null && cutOutHeight == null) || (cutOutSize == null && cutOutWidth != null && cutOutHeight != null),
-    'Use only cutOutWidth and cutOutHeight or only cutOutSize'
-    );
+    assert(
+        (cutOutSize != null && cutOutWidth == null && cutOutHeight == null) ||
+            (cutOutSize == null && cutOutWidth != null && cutOutHeight != null),
+        'Use only cutOutWidth and cutOutHeight or only cutOutSize');
   }
 
   final Color borderColor;