diff --git a/extras/src/main/java/edu/umd/cs/piccolox/swing/PViewport.java b/extras/src/main/java/edu/umd/cs/piccolox/swing/PViewport.java
index a510b4d..2a19ada 100644
--- a/extras/src/main/java/edu/umd/cs/piccolox/swing/PViewport.java
+++ b/extras/src/main/java/edu/umd/cs/piccolox/swing/PViewport.java
@@ -125,6 +125,16 @@
     }
 
     /**
+     * Notifies all <code>ChangeListeners</code> when the views size, position,
+     * or the viewports extent size has changed. 
+     * 
+     * PDefaultScrollDirector calls this so it needs to be public.
+     */
+    public void fireStateChanged() {
+        super.fireStateChanged();
+    }
+
+    /**
      * Sets the view coordinates that appear in the upper left hand corner of
      * the viewport, does nothing if there's no view.
      *