diff --git a/libguile/ChangeLog b/libguile/ChangeLog
index c1bfd93dd..147deb8a9 100644
--- a/libguile/ChangeLog
+++ b/libguile/ChangeLog
@@ -1,5 +1,7 @@
 1999-12-18  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>
 
+	* debug.c (scm_reverse_lookup): Bugfix: Reinserted SCM_NIMP.
+
 	* eval.c (SCM_CEVAL): Removed check for unbound slot in
 	SCM_IM_SLOT_REF.  (This is now handled in a smarter way in GOOPS.)