diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index bdb163247fe7..23b351c78a1b 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -679,7 +679,6 @@ def x : JoinedOrSeparate<"-x">, Flags<[DriverOption]>,
   HelpText<"Treat subsequent input files as having type <language>">,
   MetaVarName<"<language>">;
 def y : Joined<"-y">;
-def z : JoinedOrSeparate<"-z">, Flags<[LinkerInput, RenderSeparate]>;
 
 def working_directory : Separate<"-working-directory">,
   HelpText<"Resolve file paths relative to the specified directory">;