diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index f34a484..28a31ca 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -609,3 +609,5 @@
   HelpText<"OpenCL only. Sets -cl-finite-math-only and -cl-unsafe-math-optimizations, and defines __FAST_RELAXED_MATH__">;
 def cl_mad_enable : Flag<"-cl-mad-enable">,
   HelpText<"OpenCL only. Enable less precise MAD instructions to be generated.">;
+def cl_std_EQ : Joined<"-cl-std=">,
+  HelpText<"OpenCL language standard to compile for">;