diff --git a/forge-game/src/main/java/forge/game/spellability/AbilityManaPart.java b/forge-game/src/main/java/forge/game/spellability/AbilityManaPart.java
index 18af51b4658..8f597db60b6 100644
--- a/forge-game/src/main/java/forge/game/spellability/AbilityManaPart.java
+++ b/forge-game/src/main/java/forge/game/spellability/AbilityManaPart.java
@@ -421,6 +421,7 @@ public class AbilityManaPart implements java.io.Serializable {
             if (this.getSourceCard() != null && this.getSourceCard().hasChosenColor()) {
                 return MagicColor.toShortString(this.getSourceCard().getChosenColor());
             }
+            return "";
         }
         return this.getOrigProduced();
     }