diff --git a/CHANGES b/CHANGES
index 75a16ef5..1cfd788a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -6,5 +6,5 @@ This file documents the major additions and syntax changes between releases.
 	Performance data added (not all plugins yet)
 	check_vsz and check_rss deprecated - functionality moved into check_procs
 	check_swap % thresholds changed to measure amount free, instead of amount used
-	check_disk syntax changes for -p
+	check_disk syntax changes for -p, -m/-M, defaults to MB instead of kB
 	check_procs -C expects no path for the command name