diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index 4a719ca..cc294ee 100644
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -555,6 +555,7 @@
            .Case("cxx_attributes", LangOpts.CPlusPlus0x)
          //.Case("cxx_auto_type", false)
            .Case("cxx_decltype", LangOpts.CPlusPlus0x)
+           .Case("cxx_default_function_template_args", LangOpts.CPlusPlus0x)
            .Case("cxx_deleted_functions", LangOpts.CPlusPlus0x)
            .Case("cxx_inline_namespaces", LangOpts.CPlusPlus0x)
          //.Case("cxx_lambdas", false)