diff --git a/lib/Driver/ToolChains.h b/lib/Driver/ToolChains.h
index 89478d5..82fdf82 100644
--- a/lib/Driver/ToolChains.h
+++ b/lib/Driver/ToolChains.h
@@ -67,8 +67,6 @@
   /// The default iphoneos-version-min of this tool chain.
   std::string IPhoneOSVersionMin;
 
-  const char *getMacosxVersionMin() const;
-
 public:
   Darwin(const HostInfo &Host, const llvm::Triple& Triple,
          const unsigned (&DarwinVersion)[3], bool IsIPhoneOS);
@@ -112,14 +110,6 @@
     return isMacosxVersionLT(A, B);
   }
 
-  const char *getMacosxVersionStr() const {
-    return MacosxVersionMin.c_str();
-  }
-
-  const char *getIPhoneOSVersionStr() const {
-    return IPhoneOSVersionMin.c_str();
-  }
-
   /// AddLinkSearchPathArgs - Add the linker search paths to \arg CmdArgs.
   ///
   /// \param Args - The input argument list.
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 61b4ee6..edacafa 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1948,20 +1948,11 @@
   Args.AddAllArgs(CmdArgs, options::OPT_image__base);
   Args.AddAllArgs(CmdArgs, options::OPT_init);
 
-  if (!Args.hasArg(options::OPT_mmacosx_version_min_EQ) &&
-      !Args.hasArg(options::OPT_miphoneos_version_min_EQ)) {
-    // Add default version min.
-    if (!getDarwinToolChain().isIPhoneOS()) {
-      CmdArgs.push_back("-macosx_version_min");
-      CmdArgs.push_back(getDarwinToolChain().getMacosxVersionStr());
-    } else {
-      CmdArgs.push_back("-iphoneos_version_min");
-      CmdArgs.push_back(getDarwinToolChain().getIPhoneOSVersionStr());
-    }
-  }
-
-  // Adding all arguments doesn't make sense here but this is what
-  // gcc does.
+  // Adding all arguments doesn't make sense here but this is what gcc does. One
+  // of this should always be present thanks to argument translation.
+  assert((Args.hasArg(options::OPT_mmacosx_version_min_EQ) ||
+          Args.hasArg(options::OPT_miphoneos_version_min_EQ)) &&
+         "Missing version argument (lost in translation)?");
   Args.AddAllArgsTranslated(CmdArgs, options::OPT_mmacosx_version_min_EQ,
                             "-macosx_version_min");
   Args.AddAllArgsTranslated(CmdArgs, options::OPT_miphoneos_version_min_EQ,