diff --git a/CHANGES b/CHANGES
index a24f5ddd9..01deec597 100644
--- a/CHANGES
+++ b/CHANGES
@@ -31,6 +31,8 @@
 2.5.5 -> 2.5.6:
 	- sub-packages inherit RPMTAG_EPOCH (just like RPMTAG_VERSION/RELEASE).
 	- fix off-by-1 alloca that prevented relocating /.
+	- there must be a { between two % in a query format (unless %% is
+	  used).
 
 2.5.4 -> 2.5.5:
 	- permit rpm to be built in a sub-directory (--srcdir=DIR).