diff --git a/llvm/include/llvm/CodeGen/MachineScheduler.h b/llvm/include/llvm/CodeGen/MachineScheduler.h
index 705799877028..692335fc7a6d 100644
--- a/llvm/include/llvm/CodeGen/MachineScheduler.h
+++ b/llvm/include/llvm/CodeGen/MachineScheduler.h
@@ -1014,6 +1014,7 @@ protected:
 /// Callbacks from ScheduleDAGMI:
 ///   initPolicy -> initialize(DAG) -> registerRoots -> pickNode ...
 class PostGenericScheduler : public GenericSchedulerBase {
+protected:
   ScheduleDAGMI *DAG;
   SchedBoundary Top;
   SmallVector<SUnit*, 8> BotRoots;