Index: source/org/jivesoftware/smackx/muc/RoomInfo.java
===================================================================
--- source/org/jivesoftware/smackx/muc/RoomInfo.java	(revision 6831)
+++ source/org/jivesoftware/smackx/muc/RoomInfo.java	(working copy)
@@ -93,7 +93,7 @@
             this.description = descField == null ? "" : descField.getValues().next();
 
             FormField subjField = form.getField("muc#roominfo_subject");
-            this.subject = subjField == null ? "" : subjField.getValues().next();
+            this.subject = (subjField == null || !(subjField.getValues().hasNext()) ) ? "n/a" : subjField.getValues().next();
 
             FormField occCountField = form.getField("muc#roominfo_occupants");
             this.occupantsCount = occCountField == null ? -1 : Integer.parseInt(occCountField.getValues()