diff --git a/packages/maths/lib/src/maths.dart b/packages/maths/lib/src/maths.dart
index e37f8132..d0912418 100644
--- a/packages/maths/lib/src/maths.dart
+++ b/packages/maths/lib/src/maths.dart
@@ -33,6 +33,7 @@ List<Vector2> calculateBezierCurve({
   required List<Vector2> controlPoints,
   double step = 0.001,
 }) {
+  assert(0 <= step && step <= 1, 'Range 0<=step<=1');
   assert(
     controlPoints.length >= 2,
     'At least 2 control points to create a bezier curve',