diff --git a/packages/flutter/lib/src/scheduler/scheduler.dart b/packages/flutter/lib/src/scheduler/scheduler.dart
index b1420a5af2..acfb3e0ee4 100644
--- a/packages/flutter/lib/src/scheduler/scheduler.dart
+++ b/packages/flutter/lib/src/scheduler/scheduler.dart
@@ -95,12 +95,11 @@ abstract class Scheduler extends BindingBase {
 
   SchedulingStrategy schedulingStrategy = new DefaultSchedulingStrategy();
 
-  final PriorityQueue _taskQueue = new HeapPriorityQueue<_TaskEntry>(
-    (_TaskEntry e1, _TaskEntry e2) {
-      // Note that we inverse the priority.
-      return -e1.priority.compareTo(e2.priority);
-    }
-  );
+  static int _taskSorter (_TaskEntry e1, _TaskEntry e2) {
+    // Note that we inverse the priority.
+    return -e1.priority.compareTo(e2.priority);
+  }
+  final PriorityQueue _taskQueue = new HeapPriorityQueue<_TaskEntry>(_taskSorter);
 
   /// Whether this scheduler already requested to be called from the event loop.
   bool _hasRequestedAnEventLoopCallback = false;
diff --git a/packages/unit/test/scheduler/scheduler_test.dart.disabled b/packages/unit/test/scheduler/scheduler_test.dart
similarity index 100%
rename from packages/unit/test/scheduler/scheduler_test.dart.disabled
rename to packages/unit/test/scheduler/scheduler_test.dart