diff --git a/src/as/com/threerings/crowd/chat/client/ChatDirector.as b/src/as/com/threerings/crowd/chat/client/ChatDirector.as
index 632e632ad..d6ba3c4d3 100644
--- a/src/as/com/threerings/crowd/chat/client/ChatDirector.as
+++ b/src/as/com/threerings/crowd/chat/client/ChatDirector.as
@@ -66,6 +66,9 @@ import com.threerings.crowd.chat.data.UserSystemMessage;
 public class ChatDirector extends BasicDirector
     implements LocationObserver, MessageListener
 {
+    // statically reference classes we require
+    ChatMarshaller;
+
     /**
      * Creates a chat director and initializes it with the supplied context. The chat director will
      * register itself as a location observer so that it can automatically process place
@@ -99,9 +102,6 @@ public class ChatDirector extends BasicDirector
         registerCommandHandler(msg, "think", new ThinkHandler());
 //        registerCommandHandler(msg, "tell", new TellHandler());
         registerCommandHandler(msg, "broadcast", new BroadcastHandler());
-
-        // ensure that the compiler includes these necessary symbols
-        var i :int = ChatMarshaller.AWAY;
     }
 
     /**
diff --git a/src/as/com/threerings/crowd/client/CrowdClient.as b/src/as/com/threerings/crowd/client/CrowdClient.as
index 1ab39b69e..67e5d6741 100644
--- a/src/as/com/threerings/crowd/client/CrowdClient.as
+++ b/src/as/com/threerings/crowd/client/CrowdClient.as
@@ -34,13 +34,13 @@ import com.threerings.crowd.data.CrowdPermissionPolicy;
  */
 public class CrowdClient extends Client
 {
+    // statically reference classes we require
+    BodyMarshaller;
+    CrowdPermissionPolicy;
+
     public function CrowdClient (creds :Credentials)
     {
         super(creds);
-
-        // ensure that the compiler includes these necessary symbols
-        var i :int = BodyMarshaller.SET_IDLE;
-        var c :Class = CrowdPermissionPolicy;
     }
 }
 }
diff --git a/src/as/com/threerings/crowd/client/LocationDirector.as b/src/as/com/threerings/crowd/client/LocationDirector.as
index faa48f4ef..9441f06f3 100644
--- a/src/as/com/threerings/crowd/client/LocationDirector.as
+++ b/src/as/com/threerings/crowd/client/LocationDirector.as
@@ -52,7 +52,8 @@ import com.threerings.crowd.util.CrowdContext;
 public class LocationDirector extends BasicDirector
     implements Subscriber, LocationReceiver
 {
-    private static const log :Log = Log.getLog(LocationDirector);
+    // statically reference classes we require
+    LocationMarshaller;
 
     /**
      * Constructs a location director which will configure itself for operation using the supplied
@@ -67,9 +68,6 @@ public class LocationDirector extends BasicDirector
 
         // register for location notifications
         _cctx.getClient().getInvocationDirector().registerReceiver(new LocationDecoder(this));
-
-        // ensure that the compiler includes these necessary symbols
-        var i :int = LocationMarshaller.LEAVE_PLACE;
     }
 
     /**
@@ -540,6 +538,8 @@ public class LocationDirector extends BasicDirector
         });
     }
 
+    protected const log :Log = Log.getLog(this);
+
     /** The context through which we access needed services. */
     protected var _cctx :CrowdContext;
 
diff --git a/src/as/com/threerings/presents/client/Client.as b/src/as/com/threerings/presents/client/Client.as
index 4331cfa01..bb61a8bc4 100644
--- a/src/as/com/threerings/presents/client/Client.as
+++ b/src/as/com/threerings/presents/client/Client.as
@@ -54,12 +54,12 @@ public class Client extends EventDispatcher
 
     private static const log :Log = Log.getLog(Client);
 
+    // statically reference classes we require
+    TimeBaseMarshaller;
+
     public function Client (creds :Credentials)
     {
         _creds = creds;
-
-        // ensure that the compiler includes these necessary symbols
-        var i :int = TimeBaseMarshaller.GET_TIME_OID;
     }
 
     /**