diff --git a/llvm/lib/Support/CodeGenCoverage.cpp b/llvm/lib/Support/CodeGenCoverage.cpp
index f39eb75..902736c 100644
--- a/llvm/lib/Support/CodeGenCoverage.cpp
+++ b/llvm/lib/Support/CodeGenCoverage.cpp
@@ -101,7 +101,7 @@
     std::string CoverageFilename = (CoveragePrefix + Pid).str();
 
     std::error_code EC;
-    sys::fs::OpenFlags OpenFlags = sys::fs::F_Append;
+    sys::fs::OpenFlags OpenFlags = sys::fs::OF_Append;
     std::unique_ptr<ToolOutputFile> CoverageFile =
         llvm::make_unique<ToolOutputFile>(CoverageFilename, EC, OpenFlags);
     if (EC)