diff --git a/scripts/backup b/scripts/backup
index c8f2b3a..27be528 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -31,6 +31,7 @@ app=$YNH_APP_INSTANCE_NAME
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
+datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 
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