diff --git a/scripts/install b/scripts/install
index 7d30cc7..60fae66 100644
--- a/scripts/install
+++ b/scripts/install
@@ -93,7 +93,7 @@ ynh_app_setting_set $app cli_port $cli_port
 # WARNING : theses command are used in INSTALL, UPGRADE, RESTORE
 # For any update do it in all files
 
-# Make dh cert for synapse if it not exist
+# Make dh cert for synapse if doesn't exist
 if [[ ! -e /etc/ssl/private/dh2048.pem ]]
 then
     openssl dhparam -out /etc/ssl/private/dh2048.pem -outform PEM -2 2048 -dsaparam 2> /dev/null