diff --git a/app/Helpers/Helper.php b/app/Helpers/Helper.php
index 7980e22fe1..33fc21fc9d 100644
--- a/app/Helpers/Helper.php
+++ b/app/Helpers/Helper.php
@@ -123,9 +123,9 @@ class Helper
         if (is_numeric($cost)) {
 
             if (Setting::getSettings()->digit_separator=='1.234,56') {
-                return number_format($cost, 2, ',', '.');
+                return (float) number_format($cost, 2, ',', '.');
             }
-            return number_format($cost, 2, '.', ',');
+            return (float) number_format($cost, 2, '.', ',');
         }
         // It's already been parsed.
         return $cost;