diff --git a/include/clang/Driver/ToolChain.h b/include/clang/Driver/ToolChain.h
index 7610c7575041a5160820e7ed7d04c3f6c3bb86eb..75ee5741d4c9c04d08d0d3141b682a7d59c9cd49 100644
--- a/include/clang/Driver/ToolChain.h
+++ b/include/clang/Driver/ToolChain.h
@@ -208,8 +208,8 @@ public:
 
   /// AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set
   /// the include paths to use for the given C++ standard library type.
-  virtual void AddClangCXXStdlibIncludeArgs(const ArgList &Args,
-                                            ArgStringList &CmdArgs) const;
+  virtual void AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+                                            ArgStringList &CC1Args) const;
 
   /// AddCXXStdlibLibArgs - Add the system specific linker arguments to use
   /// for the given C++ standard library type.
diff --git a/lib/Driver/ToolChain.cpp b/lib/Driver/ToolChain.cpp
index 5418436315d9035a1457298bc07363e51baf962b..9453848ec00df14f9aa0da617ba9254ceb803735 100644
--- a/lib/Driver/ToolChain.cpp
+++ b/lib/Driver/ToolChain.cpp
@@ -230,8 +230,8 @@ ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
   return ToolChain::CST_Libstdcxx;
 }
 
-void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &Args,
-                                             ArgStringList &CmdArgs) const {
+void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+                                             ArgStringList &CC1Args) const {
   // Header search paths should be handled by each of the subclasses.
   // Historically, they have not been, and instead have been handled inside of
   // the CC1-layer frontend. As the logic is hoisted out, this generic function
@@ -241,7 +241,7 @@ void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &Args,
   // '-stdlib=' flag down to CC1 so that it can in turn customize the C++
   // header search paths with it. Once all systems are overriding this
   // function, the CC1 flag and this line can be removed.
-  Args.AddAllArgs(CmdArgs, options::OPT_stdlib_EQ);
+  DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
 }
 
 void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,