diff --git a/CHANGES b/CHANGES
index 654c3ba..a51e1d0 100644
--- a/CHANGES
+++ b/CHANGES
@@ -12,7 +12,7 @@ untagged yet (2018-10-02)
     By default checks route[4] presence, to check route6 objects shall be
     used together with -6.
     - cleanup OpenBGPd prefix-sets. Submitted by Claudio Jeker.
-	- new flag -s: generate as-sets for OpenBGPd (OpenBSD 6.4+) and JSON
+	- new flag -t: generate as-sets for OpenBGPd (OpenBSD 6.4+) and JSON
     formats. Based on submission by Claudio Jeker.
 
 0.1.35-rc2 (2017-06-14)