diff --git a/lib/CodeGen/DFAPacketizer.cpp b/lib/CodeGen/DFAPacketizer.cpp
index 6619bcf..5b40ae1 100644
--- a/lib/CodeGen/DFAPacketizer.cpp
+++ b/lib/CodeGen/DFAPacketizer.cpp
@@ -108,7 +108,7 @@
   DefaultVLIWScheduler(MachineFunction &MF, MachineLoopInfo &MLI,
                    MachineDominatorTree &MDT, bool IsPostRA);
   // Schedule - Actual scheduling work.
-  void schedule();
+  void schedule() override;
 };
 }