Index: trunk/src/org/openstreetmap/josm/gui/dialogs/ValidatorDialog.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/dialogs/ValidatorDialog.java	(revision 14853)
+++ trunk/src/org/openstreetmap/josm/gui/dialogs/ValidatorDialog.java	(revision 14854)
@@ -216,5 +216,5 @@
         }
 
-        public void updateEnabledState() {
+        void updateEnabledState() {
             boolean found = false;
             for (TestError e : tree.getErrors()) {
@@ -691,4 +691,5 @@
     public void processDatasetEvent(AbstractDatasetChangedEvent event) {
         validateAction.updateEnabledState();
+        lookupAction.updateEnabledState();
     }