diff --git a/code/debug-int.lisp b/code/debug-int.lisp
index b968e3a7e514b63a036177a3b3d27fda93664aff..012a35f74c8cf6e867ca1c1c17e0ae77ab335d85 100644
--- a/code/debug-int.lisp
+++ b/code/debug-int.lisp
@@ -2162,8 +2162,8 @@
 	     (with-nfp ((var) &body body)
 	       `(let ((,var (if escaped
 				(int-sap (escape-register escaped
-							  c::nfp-offset))
-				(sap-ref-sap fp c::nfp-save-offset))))
+							  vm::nfp-offset))
+				(sap-ref-sap fp vm::nfp-save-offset))))
 		  ,@body)))
     (ecase (c::sc-offset-scn sc-offset)
       ((#.vm:any-reg-sc-number #.vm:descriptor-reg-sc-number)