diff --git a/ChangeLog b/ChangeLog
index c51e3156..7bbc5586 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,5 @@
 10/12/17 started 8.6.1
-- stop window new/free cycling .. faster zoom out on some large images in nip2
+- fix mmap window new/free cycling 
 - fix some compiler warnings
 - remove the 64-image limit on bandary operations
 - better version date [bmwiedemann]
@@ -8,6 +8,7 @@
 - fix misspelling of IPTC as IPCT [lovell]
 - seq could be set on small images opened in random-access mode [aferrero2707]
 - fix small memleak in dzsave [lovell]
+- small speedup for rgb->g [lovell]
 
 15/4/17 started 8.6.0
 - supports fits images with leading non-image HDUs, thanks benepo