diff --git a/scripts/config b/scripts/config
index 57c1c3b..52b80fa 100644
--- a/scripts/config
+++ b/scripts/config
@@ -93,7 +93,7 @@ set__prices() {
     #---------------------------------------------
     # IMPORTANT: to be able to upgrade properly, you have to save the value in settings too
     #---------------------------------------------
-    ynh_app_setting_set --app=$app prices $prices
+    ynh_app_setting_set --app=$app --key=prices --value="$prices"
 }
 
 #=================================================