diff --git a/src/java/com/threerings/crowd/data/PlaceObject.java b/src/java/com/threerings/crowd/data/PlaceObject.java
index e932f6a55..b677de224 100644
--- a/src/java/com/threerings/crowd/data/PlaceObject.java
+++ b/src/java/com/threerings/crowd/data/PlaceObject.java
@@ -70,7 +70,7 @@ public class PlaceObject extends DObject
      * step on one another even if they make rapid fire changes to a
      * user's occupant info.
      */
-    public DSet occupantInfo = new DSet();
+    public DSet<OccupantInfo> occupantInfo = new DSet<OccupantInfo>();
 
     /** Used to generate speak requests on this place object. */
     public SpeakMarshaller speakService;