diff --git a/src/java/com/threerings/crowd/data/PlaceObject.java b/src/java/com/threerings/crowd/data/PlaceObject.java
index 98517abff..a2cbd2681 100644
--- a/src/java/com/threerings/crowd/data/PlaceObject.java
+++ b/src/java/com/threerings/crowd/data/PlaceObject.java
@@ -195,7 +195,9 @@ public class PlaceObject extends DObject
     public void setOccupantInfo (DSet<com.threerings.crowd.data.OccupantInfo> value)
     {
         requestAttributeChange(OCCUPANT_INFO, value, this.occupantInfo);
-        this.occupantInfo = (value == null) ? null : value.typedClone();
+        @SuppressWarnings("unchecked") DSet<com.threerings.crowd.data.OccupantInfo> clone =
+            (value == null) ? null : value.typedClone();
+        this.occupantInfo = clone;
     }
 
     /**
diff --git a/src/java/com/threerings/presents/data/ClientObject.java b/src/java/com/threerings/presents/data/ClientObject.java
index f334064d5..28566be1b 100644
--- a/src/java/com/threerings/presents/data/ClientObject.java
+++ b/src/java/com/threerings/presents/data/ClientObject.java
@@ -128,7 +128,9 @@ public class ClientObject extends DObject
     public void setReceivers (DSet<com.threerings.presents.client.InvocationReceiver.Registration> value)
     {
         requestAttributeChange(RECEIVERS, value, this.receivers);
-        this.receivers = (value == null) ? null : value.typedClone();
+        @SuppressWarnings("unchecked") DSet<com.threerings.presents.client.InvocationReceiver.Registration> clone =
+            (value == null) ? null : value.typedClone();
+        this.receivers = clone;
     }
     // AUTO-GENERATED: METHODS END
 }
diff --git a/src/java/com/threerings/presents/peer/data/NodeObject.java b/src/java/com/threerings/presents/peer/data/NodeObject.java
index f279b68c7..8dba252fd 100644
--- a/src/java/com/threerings/presents/peer/data/NodeObject.java
+++ b/src/java/com/threerings/presents/peer/data/NodeObject.java
@@ -81,7 +81,9 @@ public class NodeObject extends DObject
     public void setClients (DSet<com.threerings.presents.peer.data.ClientInfo> value)
     {
         requestAttributeChange(CLIENTS, value, this.clients);
-        this.clients = (value == null) ? null : value.typedClone();
+        @SuppressWarnings("unchecked") DSet<com.threerings.presents.peer.data.ClientInfo> clone =
+            (value == null) ? null : value.typedClone();
+        this.clients = clone;
     }
     // AUTO-GENERATED: METHODS END
 }