diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 00363d9..b007ac4 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -331,6 +331,7 @@
   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
   case frontend::PrintDeclContext:       return "-print-decl-contexts";
+  case frontend::PrintPreamble:          return "-print-preamble";
   case frontend::PrintPreprocessedInput: return "-E";
   case frontend::RewriteMacros:          return "-rewrite-macros";
   case frontend::RewriteObjC:            return "-rewrite-objc";
@@ -989,6 +990,8 @@
       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
     case OPT_print_decl_contexts:
       Opts.ProgramAction = frontend::PrintDeclContext; break;
+    case OPT_print_preamble:
+      Opts.ProgramAction = frontend::PrintPreamble; break;
     case OPT_E:
       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
     case OPT_rewrite_macros: