Index: /trunk/source/compiler/X86/X8664/x8664-backend.lisp
===================================================================
--- /trunk/source/compiler/X86/X8664/x8664-backend.lisp	(revision 12599)
+++ /trunk/source/compiler/X86/X8664/x8664-backend.lisp	(revision 12600)
@@ -88,5 +88,6 @@
                 :target-arch x8664::*x8664-target-arch*
                 ;; Overload %gs until Apple straightens things out.
-                :lisp-context-register x8664::gs
+                ;; Whoops; they never did.
+                :lisp-context-register x8664::r11
                 ))