--- a/clang/lib/Driver/ToolChains/Darwin.cpp
+++ b/clang/lib/Driver/ToolChains/Darwin.cpp
@@ -896,8 +896,8 @@
 bool MachO::HasNativeLLVMSupport() const { return true; }
 
 ToolChain::CXXStdlibType Darwin::GetDefaultCXXStdlibType() const {
-  // Use libstdc++ on old targets (OSX < 10.9 and iOS < 7)
-  if ((isTargetMacOSBased() && isMacosxVersionLT(10, 9)) ||
+  // Use libstdc++ on old targets (OSX < 10.4 and iOS < 7)
+  if ((isTargetMacOSBased() && isMacosxVersionLT(10, 4)) ||
       (isTargetIOSBased() && isIPhoneOSVersionLT(7, 0)))
     return ToolChain::CST_Libstdcxx;