diff --git a/lib/Frontend/HeaderIncludeGen.cpp b/lib/Frontend/HeaderIncludeGen.cpp
index 79920df..4d8a05c 100644
--- a/lib/Frontend/HeaderIncludeGen.cpp
+++ b/lib/Frontend/HeaderIncludeGen.cpp
@@ -54,7 +54,7 @@
   if (!OutputPath.empty()) {
     std::string Error;
     llvm::raw_fd_ostream *OS = new llvm::raw_fd_ostream(
-      OutputPath.str().c_str(), Error, llvm::raw_fd_ostream::F_Append);
+        OutputPath.str().c_str(), Error, llvm::sys::fs::F_Append);
     if (!Error.empty()) {
       PP.getDiagnostics().Report(
         clang::diag::warn_fe_cc_print_header_failure) << Error;