diff --git a/src/java/com/threerings/miso/data/MisoSceneModel.java b/src/java/com/threerings/miso/data/MisoSceneModel.java
index 9354a889d..992f3e9d4 100644
--- a/src/java/com/threerings/miso/data/MisoSceneModel.java
+++ b/src/java/com/threerings/miso/data/MisoSceneModel.java
@@ -1,5 +1,5 @@
 //
-// $Id: MisoSceneModel.java,v 1.17 2003/04/21 17:08:57 mdb Exp $
+// $Id: MisoSceneModel.java,v 1.18 2003/04/25 22:26:25 mdb Exp $
 
 package com.threerings.miso.data;
 
@@ -52,6 +52,14 @@ public abstract class MisoSceneModel extends SimpleStreamableObject
      */
     public abstract boolean setBaseTile (int fqTileId, int x, int y);
 
+    /**
+     * Updates the default base tileset id for this scene.
+     */
+    public void setDefaultBaseTileSet (int tileSetId)
+    {
+        // nothing doing
+    }
+
     /**
      * Scene models can return a default tileset to be used when no base
      * tile data exists for a particular tile.
diff --git a/src/java/com/threerings/miso/data/SparseMisoSceneModel.java b/src/java/com/threerings/miso/data/SparseMisoSceneModel.java
index a4cd2d241..a77434923 100644
--- a/src/java/com/threerings/miso/data/SparseMisoSceneModel.java
+++ b/src/java/com/threerings/miso/data/SparseMisoSceneModel.java
@@ -1,5 +1,5 @@
 //
-// $Id: SparseMisoSceneModel.java,v 1.5 2003/04/24 21:11:23 mdb Exp $
+// $Id: SparseMisoSceneModel.java,v 1.6 2003/04/25 22:26:25 mdb Exp $
 
 package com.threerings.miso.data;
 
@@ -266,6 +266,12 @@ public class SparseMisoSceneModel extends MisoSceneModel
         return true;
     }
 
+    // documentation inherited
+    public void setDefaultBaseTileSet (int tileSetId)
+    {
+        defTileSet = tileSetId;
+    }
+
     // documentation inherited
     public int getDefaultBaseTileSet ()
     {