Index: /trunk/ccl/lisp-kernel/x86-spentry64.s
===================================================================
--- /trunk/ccl/lisp-kernel/x86-spentry64.s	(revision 5158)
+++ /trunk/ccl/lisp-kernel/x86-spentry64.s	(revision 5159)
@@ -3949,5 +3949,5 @@
 	__(extract_typecode(%arg_y,%imm0))
 	__(cmpb $min_vector_subtag,%imm0_b)
-	__(box_fixnum(%imm0,%arg_x))
+	__(box_fixnum_no_flags(%imm0,%arg_x))
 	__(ja _SPsubtag_misc_ref)
 	__(jump_builtin(_builtin_aref1,2))