diff --git a/llvm/tools/llvm-mca/include/SourceMgr.h b/llvm/tools/llvm-mca/include/SourceMgr.h
index 4a55bdb..e518010 100644
--- a/llvm/tools/llvm-mca/include/SourceMgr.h
+++ b/llvm/tools/llvm-mca/include/SourceMgr.h
@@ -27,13 +27,13 @@
 
 class SourceMgr {
   using UniqueInst = std::unique_ptr<Instruction>;
-  llvm::ArrayRef<UniqueInst> Sequence;
+  ArrayRef<UniqueInst> Sequence;
   unsigned Current;
   const unsigned Iterations;
   static const unsigned DefaultIterations = 100;
 
 public:
-  SourceMgr(llvm::ArrayRef<UniqueInst> S, unsigned Iter)
+  SourceMgr(ArrayRef<UniqueInst> S, unsigned Iter)
       : Sequence(S), Current(0), Iterations(Iter ? Iter : DefaultIterations) {}
 
   unsigned getNumIterations() const { return Iterations; }
@@ -46,7 +46,7 @@
     return SourceRef(Current, *Sequence[Current % Sequence.size()]);
   }
 
-  using const_iterator = llvm::ArrayRef<UniqueInst>::const_iterator;
+  using const_iterator = ArrayRef<UniqueInst>::const_iterator;
   const_iterator begin() const { return Sequence.begin(); }
   const_iterator end() const { return Sequence.end(); }
 };