diff --git a/app/models/concerns/variant_stock.rb b/app/models/concerns/variant_stock.rb
index 0a7ba06d28..09028f4d91 100644
--- a/app/models/concerns/variant_stock.rb
+++ b/app/models/concerns/variant_stock.rb
@@ -183,7 +183,7 @@ module VariantStock
   # Calling stock_item.adjust_count_on_hand will bypass filling backorders and creating stock movements
   # If that was required we could call self.move
   def overwrite_stock_levels(new_level)
-    stock_item.adjust_count_on_hand(new_level - stock_item.count_on_hand)
+    stock_item.adjust_count_on_hand(new_level.to_i - stock_item.count_on_hand)
   end
 
   # There shouldn't be any other stock items, because we should