diff --git a/dom/animation/test/chrome/test_animation_performance_warning.html b/dom/animation/test/chrome/test_animation_performance_warning.html
index 58a6b6e0a218..c6d6f5488197 100644
--- a/dom/animation/test/chrome/test_animation_performance_warning.html
+++ b/dom/animation/test/chrome/test_animation_performance_warning.html
@@ -332,7 +332,7 @@ function testSetOfGeometricProperties() {
               warning: 'CompositorAnimationWarningTransformWithSyncGeometricAnimations'
             }
           ]);
-      }, 'Transform animation should be run on the main thread');
+      });
     }, `${property} is treated as a geometric property`);
   });
 }