diff --git a/llvm/unittests/Support/ReverseIterationTest.cpp b/llvm/unittests/Support/ReverseIterationTest.cpp
index 05804e69c260..657368283efc 100644
--- a/llvm/unittests/Support/ReverseIterationTest.cpp
+++ b/llvm/unittests/Support/ReverseIterationTest.cpp
@@ -45,7 +45,7 @@ TEST(ReverseIterationTest, DenseMapTest1) {
   int IterKeys[] = { 2, 4, 1, 3 };
 
   // Check that the DenseMap is iterated in the expected order.
-  for (const auto &Tuple : zip(Map, IterKeys))
+  for (auto Tuple : zip(Map, IterKeys))
     ASSERT_EQ(std::get<0>(Tuple).first, std::get<1>(Tuple));
 
   // Check operator++ (post-increment).
@@ -99,7 +99,7 @@ TEST(ReverseIterationTest, DenseMapTest2) {
     std::reverse(&Keys[0], &Keys[4]);
 
   // Check that the DenseMap is iterated in the expected order.
-  for (const auto &Tuple : zip(Map, Keys))
+  for (auto Tuple : zip(Map, Keys))
     ASSERT_EQ(std::get<0>(Tuple).second, std::get<1>(Tuple)->value);
 
   // Check operator++ (post-increment).