diff --git a/Driver/SerializationTest.cpp b/Driver/SerializationTest.cpp
index 9f93479..e489a19 100644
--- a/Driver/SerializationTest.cpp
+++ b/Driver/SerializationTest.cpp
@@ -65,7 +65,7 @@
   { 
     // Pretty-print the decls to a temp file.
     std::string Err;
-    llvm::raw_fd_ostream DeclPP(FNameDeclPrint.c_str(), Err);
+    llvm::raw_fd_ostream DeclPP(FNameDeclPrint.c_str(), true, Err);
     assert (Err.empty() && "Could not open file for printing out decls.");
     llvm::OwningPtr<ASTConsumer> FilePrinter(CreateASTPrinter(&DeclPP));
     
@@ -89,7 +89,7 @@
   {
     // Pretty-print the deserialized decls to a temp file.
     std::string Err;
-    llvm::raw_fd_ostream DeclPP(FNameDeclPrint.c_str(), Err);
+    llvm::raw_fd_ostream DeclPP(FNameDeclPrint.c_str(), true, Err);
     assert (Err.empty() && "Could not open file for printing out decls.");
     llvm::OwningPtr<ASTConsumer> FilePrinter(CreateASTPrinter(&DeclPP));