diff --git a/llvm/unittests/Support/YAMLParserTest.cpp b/llvm/unittests/Support/YAMLParserTest.cpp
index cd8b9f7..1a5188a 100644
--- a/llvm/unittests/Support/YAMLParserTest.cpp
+++ b/llvm/unittests/Support/YAMLParserTest.cpp
@@ -210,8 +210,9 @@
 
   // When we construct a YAML stream over a named buffer,
   // we get its ID as filename in diagnostics.
-  MemoryBuffer* Buffer = MemoryBuffer::getMemBuffer("[]", "buffername.yaml");
-  yaml::Stream Stream(Buffer, SM);
+  std::unique_ptr<MemoryBuffer> Buffer(
+      MemoryBuffer::getMemBuffer("[]", "buffername.yaml"));
+  yaml::Stream Stream(std::move(Buffer), SM);
   Stream.printError(Stream.begin()->getRoot(), "Hello, World!");
   EXPECT_EQ("buffername.yaml", GeneratedDiag.getFilename());
 }