diff --git a/scripts/install b/scripts/install
index de08521..91e3d7e 100644
--- a/scripts/install
+++ b/scripts/install
@@ -50,7 +50,7 @@ ynh_app_setting_set --app=$app --key=is_public --value=$is_public
 ynh_app_setting_set --app=$app --key=path_url --value=$path_url
 ynh_app_setting_set --app=$app --key=admin --value=$admin
 
-admin_mail=$(ynh_user_get_info "$admin" 'mail')
+admin_mail=$(ynh_user_get_info "$admin" "mail")
 
 #=================================================
 # STANDARD MODIFICATIONS
diff --git a/scripts/upgrade b/scripts/upgrade
index 81ec3ed..6a281ef 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -21,7 +21,7 @@ path_url=$(ynh_app_setting_get --app=$app --key=path_url)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 is_public=$(ynh_app_setting_get --app=$app --key=is_public)
 admin=$(ynh_app_setting_get --app=$app --key=admin)
-admin_mail=$(ynh_user_get_info '$admin' 'mail')
+admin_mail=$(ynh_user_get_info "$admin" "mail")
 port=$(ynh_app_setting_get --app=$app --key=port)
 porti=$(ynh_app_setting_get --app=$app --key=porti)