diff --git a/clang/Driver/clang.cpp b/clang/Driver/clang.cpp
index 48ae2216d43b..a2ec08a1546e 100644
--- a/clang/Driver/clang.cpp
+++ b/clang/Driver/clang.cpp
@@ -583,6 +583,7 @@ static void InitializeLanguageStandard(LangOptions &Options, LangKind LK,
       break;
     case langkind_cxx:
     case langkind_cxx_cpp:
+    case langkind_cxx_pch:
     case langkind_objcxx:
     case langkind_objcxx_cpp:
     case langkind_objcxx_pch: