diff --git a/Utils/cardExtendedClass.tmpl b/Utils/cardExtendedClass.tmpl
index b72c48ad1d4..0bc742dd120 100644
--- a/Utils/cardExtendedClass.tmpl
+++ b/Utils/cardExtendedClass.tmpl
@@ -37,7 +37,7 @@ public class [=$className=] extends mage.sets.[=$baseSet=].[=$className=] {
 
     public [=$className=](UUID ownerId) {
         super(ownerId);
-        this.cardNumber = [=$cardNumber=];
+        this.cardNumber = "[=$cardNumber=]";
         this.expansionSetCode = "[=$expansionSetCode=]";[=$rarityExtended=]
     }