diff --git a/clang/lib/Lex/HeaderMap.cpp b/clang/lib/Lex/HeaderMap.cpp
index 56fd694..d71e4bc 100644
--- a/clang/lib/Lex/HeaderMap.cpp
+++ b/clang/lib/Lex/HeaderMap.cpp
@@ -81,7 +81,7 @@
   unsigned FileSize = FE->getSize();
   if (FileSize <= sizeof(HMapHeader)) return 0;
 
-  OwningPtr<const llvm::MemoryBuffer> FileBuffer(FM.getBufferForFile(FE));
+  std::unique_ptr<const llvm::MemoryBuffer> FileBuffer(FM.getBufferForFile(FE));
   if (!FileBuffer) return 0;  // Unreadable file?
   const char *FileStart = FileBuffer->getBufferStart();