diff --git a/data/actionsmap/yunohost.yml b/data/actionsmap/yunohost.yml
index a34d2af11..c84cc30a8 100644
--- a/data/actionsmap/yunohost.yml
+++ b/data/actionsmap/yunohost.yml
@@ -304,7 +304,7 @@ domain:
                     help: Target domain
                 -t:
                     full: --ttl
-                    help: Time To Live (TTL) is second before DNS servers update. Default is 3600 second (i.e. 1 hour).
+                    help: Time To Live (TTL) in second before DNS servers update. Default is 3600 second (i.e. 1 hour).
                     extra:
                         pattern: &pattern_ttl
                             - !!str ^[0-9]+$