diff --git a/test/modules/tiledimage.js b/test/modules/tiledimage.js
index 614d28fd..d7a46aef 100644
--- a/test/modules/tiledimage.js
+++ b/test/modules/tiledimage.js
@@ -210,14 +210,8 @@
                 var canvasClip = viewer.viewport
                     .viewportToViewerElementRectangle(homeBounds);
                 var precision = 0.00000001;
-                Util.assessNumericValue(rect.x, canvasClip.x, precision,
-                    'clipping x should be ' + canvasClip.x);
-                Util.assessNumericValue(rect.y, canvasClip.y, precision,
-                    'clipping y should be ' + canvasClip.y);
-                Util.assessNumericValue(rect.width, canvasClip.width, precision,
-                    'clipping width should be ' + canvasClip.width);
-                Util.assessNumericValue(rect.height, canvasClip.height, precision,
-                    'clipping height should be ' + canvasClip.height);
+                Util.assertRectangleEquals(rect, canvasClip, precision,
+                    'clipping should be ' + canvasClip);
                 start();
             });
         });