diff --git a/changelog.txt b/changelog.txt
index 957cbaf..0c5c6a1 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,5 +1,7 @@
 Changelog:
 
+2012-07-16 (a bit later): fixed a minor error in generation of medium grey.
+
 2012-07-16: Added a new set of colors, "light" (brightness of 150% versus the 
 'full' shade), for a total of 89.  No 50% saturation version of this set.  
 Added a palette image showing the full set of colors.