diff --git a/src/ChangeLog b/src/ChangeLog
index 00bccb967f19023df8976ebd469d19b930cc9a81..4461c9dd71fd933d4b73b65f2b8e93703b2b3063 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+Wed Sep  3 00:19:38 1997  Henrik Grubbstr�m  <grubba@infovav.se>
+
+	* threads.c (f_mutex_lock): Now throws an error if a mutex is locked
+	recursively.
+
 Sun Aug 31 02:06:06 1997  Henrik Grubbstr�m  <grubba@infovav.se>
 
 	* *.{c,h,yacc}: Fixed valid prototypes for functions taking no