diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index f55922d..9d55a8e 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -518,7 +518,7 @@
   Res.push_back("-triple");
   Res.push_back(Opts.Triple);
   if (!Opts.CPU.empty()) {
-    Res.push_back("-target-cpu");
+    Res.push_back("-mcpu");
     Res.push_back(Opts.CPU);
   }
   if (!Opts.ABI.empty()) {