diff --git a/exp_legacy/module/modules/control/vlayer.lua b/exp_legacy/module/modules/control/vlayer.lua
index 1ed83cb0..9f4b7b18 100644
--- a/exp_legacy/module/modules/control/vlayer.lua
+++ b/exp_legacy/module/modules/control/vlayer.lua
@@ -372,13 +372,14 @@ local function handle_input_interfaces()
                     local count_deduct
                     local count_add
 
-                    if v.quality.level == 1 then
+                    if prototypes.quality[v.quality].level == 1 then
                         count_deduct = v.count
                         count_add = v.count
 
                     elseif prototypes.quality[v.quality].level > 1 and v.count >= 10 then
-                        count_deduct = math.floor(v.count / 10)
-                        count_add = count_deduct * (7 + (prototypes.quality[v.quality].level * 3))
+                        local batch = math.floor(v.count / 10)
+                        count_deduct = batch * 10
+                        count_add = batch * (7 + (prototypes.quality[v.quality].level * 3))
                     end
 
                     if count_deduct and count_add then