diff --git a/src/com/romraider/maps/RomID.java b/src/com/romraider/maps/RomID.java
index 873efbcb..3dcf51c1 100644
--- a/src/com/romraider/maps/RomID.java
+++ b/src/com/romraider/maps/RomID.java
@@ -78,6 +78,7 @@ public class RomID implements Serializable {
 
     public RomID() {
         this.internalIdString = "";
+        this.caseId = "";
     }
 
     public String getXmlid() {