diff --git a/tools/clang/lib/Driver/ToolChains/Arch/X86.cpp b/tools/clang/lib/Driver/ToolChains/Arch/X86.cpp

index a18b2aa..eb5eeb8 100644

--- a/tools/clang/lib/Driver/ToolChains/Arch/X86.cpp

+++ b/tools/clang/lib/Driver/ToolChains/Arch/X86.cpp

@@ -102,8 +102,8 @@ const char *x86::getX86TargetCPU(const ArgList &Args,

   case llvm::Triple::Haiku:

     return "i586";

   default:

-    // Fallback to p4.

-    return "pentium4";

+    // Fallback to i586.

+    return "i586";

   }

 }