diff --git a/gemp-lotr/gemp-lotr-logic/src/main/java/com/gempukku/lotro/cards/build/BuiltLotroCardBlueprint.java b/gemp-lotr/gemp-lotr-logic/src/main/java/com/gempukku/lotro/cards/build/BuiltLotroCardBlueprint.java
index afea6306a..51ef77912 100644
--- a/gemp-lotr/gemp-lotr-logic/src/main/java/com/gempukku/lotro/cards/build/BuiltLotroCardBlueprint.java
+++ b/gemp-lotr/gemp-lotr-logic/src/main/java/com/gempukku/lotro/cards/build/BuiltLotroCardBlueprint.java
@@ -644,6 +644,8 @@ public class BuiltLotroCardBlueprint implements LotroCardBlueprint {
             throw new InvalidCardDefinitionException("Card has to have a title");
         if (cardType == null)
             throw new InvalidCardDefinitionException("Card has to have a type");
+        if (cardType != CardType.THE_ONE_RING && side == null)
+            throw new InvalidCardDefinitionException("Only The One Ring does not have a side defined");
         if (siteNumber != 0
                 && cardType != CardType.SITE
                 && cardType != CardType.MINION)