diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index d3d6d92a..a95d5885 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -2,6 +2,7 @@ OpenSCAD 20xx.yy
 ================
 
 Bugfixes:
+o square() crashed if any of the dimensions were zero
 o Flush Caches didn't flush cached USE'd modules
 
 OpenSCAD 2011.06