--- a/browser/modules/test/browser/browser_BrowserUITelemetry_defaults.js
+++ b/browser/modules/test/browser/browser_BrowserUITelemetry_defaults.js
@@ -13,20 +13,21 @@ function test() {
   // Bug 1278176 - DevEdition never has the UI in a default state by default.
   if (!AppConstants.MOZ_DEV_EDITION) {
     Assert.ok(CustomizableUI.inDefaultState,
               "No other test should have left CUI in a dirty state.");
   }
 
   let result = BrowserUITelemetry._getWindowMeasurements(window, 0);
 
-  // Bug 1278176 - DevEdition always reports the developer-button is moved.
+  Assert.deepEqual(result.defaultMoved, []);
+  // Bug 1278176 - DevEdition always reports the developer-button is added to
+  // the toolbar.
   if (!AppConstants.MOZ_DEV_EDITION) {
-    Assert.deepEqual(result.defaultMoved, []);
+    Assert.deepEqual(result.nondefaultAdded, []);
   }
-  Assert.deepEqual(result.nondefaultAdded, []);
 
   Assert.deepEqual(result.defaultRemoved, []);
 
   // And mochi insists there's only a single window with a single tab when
   // starting a test, so check that for good measure.
   Assert.deepEqual(result.visibleTabs, [1]);
 }