diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 4147057..07505bb 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -599,7 +599,7 @@
   Res.push_back("-triple");
   Res.push_back(Opts.Triple);
   if (!Opts.CPU.empty()) {
-    Res.push_back("-mcpu");
+    Res.push_back("-target-cpu");
     Res.push_back(Opts.CPU);
   }
   if (!Opts.ABI.empty()) {
@@ -1252,7 +1252,7 @@
 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
   using namespace cc1options;
   Opts.ABI = getLastArgValue(Args, OPT_target_abi);
-  Opts.CPU = getLastArgValue(Args, OPT_mcpu);
+  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
   Opts.Triple = getLastArgValue(Args, OPT_triple);
   Opts.Features = getAllArgValues(Args, OPT_target_feature);