diff --git a/tests/Layer/Grid.html b/tests/Layer/Grid.html
index 981ccb4e83..50464f3cd8 100644
--- a/tests/Layer/Grid.html
+++ b/tests/Layer/Grid.html
@@ -1362,7 +1362,7 @@
         t.plan(5);
 
         // set up
-
+        
         var map = new OpenLayers.Map('map', {
             resolutions: [32, 16, 8, 4, 2, 1]
         });
@@ -1375,28 +1375,28 @@
 
         map.zoomTo(1);
 
-        t.delay_call(1, function() {
+        // Mark one tile loaded, to see if back buffer removal gets scheduled.
+        layer.grid[1][1].onImageLoad();
 
-            t.ok(layer.backBuffer.parentNode === layer.div,
-                 '[a] back buffer is a child of layer div');
-            t.ok(layer.backBufferTimerId !== null,
-                 '[a] back buffer scheduled for removal');
+        t.ok(layer.backBuffer.parentNode === layer.div,
+             '[a] back buffer is a child of layer div');
+        t.ok(layer.backBufferTimerId !== null,
+             '[a] back buffer scheduled for removal');
 
-            var backBuffer = layer.backBuffer;
+        var backBuffer = layer.backBuffer;
 
-            map.zoomTo(2);
+        map.zoomTo(2);
 
-            t.ok(layer.backBuffer !== backBuffer,
-                 '[b] a new back buffer was created');
-            t.ok(layer.backBuffer.parentNode === layer.div,
-                 '[b] back buffer is a child of layer div');
-            t.ok(layer.backBufferTimerId === null,
-                 '[b] back buffer no longer scheduled for removal');
+        t.ok(layer.backBuffer !== backBuffer,
+             '[b] a new back buffer was created');
+        t.ok(layer.backBuffer.parentNode === layer.div,
+             '[b] back buffer is a child of layer div');
+        t.ok(layer.backBufferTimerId === null,
+             '[b] back buffer no longer scheduled for removal');
 
-            // tear down
+        // tear down
 
-            map.destroy();
-        });
+        map.destroy();
     }
     
     function test_getGridData(t) {