diff --git a/scripts/upgrade b/scripts/upgrade
index 3917b66..573c96b 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -55,6 +55,12 @@ ynh_abort_if_errors
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
+# If final_path doesn't exist, create it
+if [ -z "$final_path" ]; then
+	final_path=/var/www/$app
+	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
+fi
+
 # If new datadir doesn't exist, create it
 if [ -z "/home/yunohost.app/$app" ]; then
         datadir=/home/yunohost.app/$app