diff --git a/packages/forge2d/example/web/circle_stress.dart b/packages/forge2d/example/web/circle_stress.dart
index f840693..ee6075d 100644
--- a/packages/forge2d/example/web/circle_stress.dart
+++ b/packages/forge2d/example/web/circle_stress.dart
@@ -122,7 +122,7 @@ class CircleStress extends Demo {
         body.createFixture(fixtureDef);
       }
 
-      body.bullet = false;
+      body.isBullet = false;
 
       // Create an empty ground body.
       final bodyDef = BodyDef();