diff --git a/scripts/install b/scripts/install
index 5b57edb..4f3cf09 100644
--- a/scripts/install
+++ b/scripts/install
@@ -123,7 +123,7 @@ sed -i "s@YNH_DB_PASS@$dbpass@g" ../sources/configuration.yml
 sed -i "s@YNH_ADMIN_USER@$admin@g" ../sources/configuration.yml
 sed -i "s@YNH_ADMIN_PASS@$adminpass@g" ../sources/configuration.yml
 adminemail=$(ynh_user_get_info $admin mail)
-sed -i "s@YNH_ADMIN_EMAIL@$adminemail@g" ../sources/configuration.yml
+sed -i "s%YNH_ADMIN_EMAIL%$adminemail%g" ../sources/configuration.yml
 sed -i "s@YNH_FORUM_TITLE@$title@g" ../sources/configuration.yml
 sudo cp ../sources/configuration.yml $final_path
 sudo su - www-data -s /bin/bash -c "cd $final_path && php -d memory_limit=-1 flarum install -f configuration.yml"