diff --git a/libguile/ChangeLog b/libguile/ChangeLog
index 69b6727a5..f2a3eaab7 100644
--- a/libguile/ChangeLog
+++ b/libguile/ChangeLog
@@ -1,5 +1,9 @@
 2000-03-29  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>
 
+	* coop-threads.c (scm_call_with_new_thread, scm_spawn_thread,
+	scm_make_mutex, scm_make_condition_variable): Cast data to
+	scm_bits_t in SCM_SET_CELL_WORD and SCM_NEWSMOB macros.
+
 	* coop.c (coop_create): Set `specific' field, not `data' to NULL.
 
 2000-03-29  Dirk Herrmann  <D.Herrmann@tu-bs.de>