diff --git a/src/IceTargetLowering.h b/src/IceTargetLowering.h
index e63ece2..8620ac2 100644
--- a/src/IceTargetLowering.h
+++ b/src/IceTargetLowering.h
@@ -206,7 +206,7 @@
     RegSet_FramePointer = 1 << 3,
     RegSet_All = ~RegSet_None
   };
-  typedef uint32_t RegSetMask;
+  using RegSetMask = uint32_t;
 
   virtual llvm::SmallBitVector getRegisterSet(RegSetMask Include,
                                               RegSetMask Exclude) const = 0;