diff --git a/engine/src/flutter/tests/raw/box_layout.dart b/engine/src/flutter/tests/raw/box_layout.dart
index 9ef58a95c4..c30fc41604 100644
--- a/engine/src/flutter/tests/raw/box_layout.dart
+++ b/engine/src/flutter/tests/raw/box_layout.dart
@@ -14,7 +14,7 @@ void main() {
   initUnit();
 
   test("padding", () {
-    var size = new RenderSizedBox(desiredSize: new sky.Size(double.INFINITY, 100.0));
+    var size = new RenderConstrainedBox(additionalConstraints: new BoxConstraints().applyHeight(100.0));
     var inner = new RenderDecoratedBox(decoration: new BoxDecoration(backgroundColor: const sky.Color(0xFF00FF00)), child: size);
     var padding = new RenderPadding(padding: new EdgeDims.all(50.0), child: inner);
     var block = new RenderBlock(children: [padding]);
diff --git a/engine/src/flutter/tests/raw/render_box-expected.txt b/engine/src/flutter/tests/raw/render_box-expected.txt
index 4e08ce8916..1e25fc901a 100644
--- a/engine/src/flutter/tests/raw/render_box-expected.txt
+++ b/engine/src/flutter/tests/raw/render_box-expected.txt
@@ -3,7 +3,7 @@ CONSOLE: TestRenderView enabled
 CONSOLE: 
 PAINT FOR FRAME #1 ----------------------------------------------
 1 | TestDisplayList() constructor: 800.0 x 600.0
-1 | paintChild RenderSizedBox at Point(0.0, 0.0)
+1 | paintChild RenderDecoratedBox at Point(0.0, 0.0)
 1 |  | TestDisplayList() constructor: 800.0 x 600.0
 1 |  | drawRect(Rect.fromLTRB(0.0, 0.0, 800.0, 600.0), Paint(Color(0xff00ff00)))
 ------------------------------------------------------------------------
diff --git a/engine/src/flutter/tests/raw/render_box.dart b/engine/src/flutter/tests/raw/render_box.dart
index b94b466c89..e01469248c 100644
--- a/engine/src/flutter/tests/raw/render_box.dart
+++ b/engine/src/flutter/tests/raw/render_box.dart
@@ -15,10 +15,8 @@ void main() {
   initUnit();
 
   test("should size to render view", () {
-    RenderSizedBox root = new RenderSizedBox(
-      child: new RenderDecoratedBox(
-        decoration: new BoxDecoration(backgroundColor: const sky.Color(0xFF00FF00))
-      )
+    RenderBox root = new RenderDecoratedBox(
+      decoration: new BoxDecoration(backgroundColor: const sky.Color(0xFF00FF00))
     );
     new TestRenderView(root);
     expect(root.size.width, equals(sky.view.width));