diff --git a/include/llvm/CodeGen/RegAllocPBQP.h b/include/llvm/CodeGen/RegAllocPBQP.h
index 635fa9d9212..9a5bd9fdbe1 100644
--- a/include/llvm/CodeGen/RegAllocPBQP.h
+++ b/include/llvm/CodeGen/RegAllocPBQP.h
@@ -175,7 +175,7 @@ private:
 /// \brief Holds solver state and other metadata relevant to each PBQP RA node.
 class NodeMetadata {
 public:
-  typedef AllowedRegVector AllowedRegVector;
+  typedef RegAlloc::AllowedRegVector AllowedRegVector;
 
   typedef enum { Unprocessed,
                  OptimallyReducible,