diff --git a/compiler/backend.lisp b/compiler/backend.lisp
index 3d298a8f44482ff3576f2475274f7a5450fafa46..131d9971df9edb340ec3e5b3e2d07c9c28516a66 100644
--- a/compiler/backend.lisp
+++ b/compiler/backend.lisp
@@ -18,7 +18,10 @@
 	   backend-name backend-version backend-fasl-file-type
 	   backend-fasl-file-implementation backend-fasl-file-version
 	   backend-register-save-penalty backend-byte-order
-	   backend-any-primitive-type))
+	   backend-any-primitive-type
+
+	   ;; The various backends need to call these support routines
+	   make-stack-pointer-tn primitive-type primitive-type-of))
 
 
 ;;;; VM support routine stuff.