diff --git a/packages/animations/test/open_container_test.dart b/packages/animations/test/open_container_test.dart
index bd0fb3975ebb..41acd5030d7e 100644
--- a/packages/animations/test/open_container_test.dart
+++ b/packages/animations/test/open_container_test.dart
@@ -1601,13 +1601,7 @@ void main() {
 }
 
 Color _getScrimColor(WidgetTester tester) {
-  // TODO(dnfield): fix this after https://github.com/flutter/flutter/pull/50979
-  final Container container = tester.widget(find.byType(Container));
-  if (container.decoration != null) {
-    final BoxDecoration decoration = container.decoration;
-    return decoration.color;
-  }
-  return (container as dynamic).color;
+  return tester.widget<ColoredBox>(find.byType(ColoredBox)).color;
 }
 
 void _expectMaterialPropertiesHaveAdvanced({