diff --git a/lib/Target/AArch64/AArch64InstrInfo.h b/lib/Target/AArch64/AArch64InstrInfo.h
index 1993b53cfc3..30bf6500331 100644
--- a/lib/Target/AArch64/AArch64InstrInfo.h
+++ b/lib/Target/AArch64/AArch64InstrInfo.h
@@ -165,7 +165,7 @@ public:
   bool optimizeCompareInstr(MachineInstr *CmpInstr, unsigned SrcReg,
                             unsigned SrcReg2, int CmpMask, int CmpValue,
                             const MachineRegisterInfo *MRI) const override;
-  bool optimizeCondBranch(MachineInstr *MI) const;
+  bool optimizeCondBranch(MachineInstr *MI) const override;
   /// hasPattern - return true when there is potentially a faster code sequence
   /// for an instruction chain ending in <Root>. All potential patterns are
   /// listed