diff --git a/app/assets/javascripts/admin/products/services/variant_unit_manager.js.coffee b/app/assets/javascripts/admin/products/services/variant_unit_manager.js.coffee
index f54b9bcbb1..fc24c07f56 100644
--- a/app/assets/javascripts/admin/products/services/variant_unit_manager.js.coffee
+++ b/app/assets/javascripts/admin/products/services/variant_unit_manager.js.coffee
@@ -35,4 +35,5 @@ angular.module("admin.products").factory "VariantUnitManager", ->
       @unitNames[unitType][scale]
 
     @unitScales: (unitType) ->
-      (parseFloat(scale) for scale in Object.keys(@unitNames[unitType])).sort()
+      (parseFloat(scale) for scale in Object.keys(@unitNames[unitType])).sort (a, b) ->
+         a - b