diff --git a/compiler/vop.lisp b/compiler/vop.lisp
index a7797c8bff27548d6f1c83cf2aab253642ca93e2..0303861bb487d0762f2f7e9b87b4b61f3b85345b 100644
--- a/compiler/vop.lisp
+++ b/compiler/vop.lisp
@@ -18,7 +18,7 @@
 	  tn-ref-next tn-ref-vop tn-ref-next-ref tn-ref-across
 	  tn-ref-target tn-ref-load-tn
 
-	  sc sc-p sc-name sc-number sc-sb
+	  sb sb-p sb-name sc sc-p sc-name sc-number sc-sb
 
 	  tn tn-p make-random-tn tn-sc tn-offset