diff --git a/Driver/RewriteMacros.cpp b/Driver/RewriteMacros.cpp
index 8931014..d10bf55 100644
--- a/Driver/RewriteMacros.cpp
+++ b/Driver/RewriteMacros.cpp
@@ -212,7 +212,7 @@
     OutFile = &llvm::outs();
   } else if (!OutFileName.empty()) {
     std::string Err;
-    OutFile = new llvm::raw_fd_ostream(OutFileName.c_str(), Err);
+    OutFile = new llvm::raw_fd_ostream(OutFileName.c_str(), false, Err);
     OwnedStream.reset(OutFile);
   } else if (InFileName == "-") {
     OutFile = &llvm::outs();
@@ -221,7 +221,7 @@
     Path.eraseSuffix();
     Path.appendSuffix("cpp");
     std::string Err;
-    OutFile = new llvm::raw_fd_ostream(Path.toString().c_str(), Err);
+    OutFile = new llvm::raw_fd_ostream(Path.toString().c_str(), false, Err);
     OwnedStream.reset(OutFile);
   }