diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 927c6a4..942bc0d 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -1508,8 +1508,8 @@
 //
 
 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
-                                        const char **ArgBegin,
-                                        const char **ArgEnd,
+                                        const char* const *ArgBegin,
+                                        const char* const *ArgEnd,
                                         Diagnostic &Diags) {
   // Parse the arguments.
   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());