--- a/vregistry.py	Tue Feb 17 23:34:01 2009 +0100
+++ b/vregistry.py	Tue Feb 17 23:34:17 2009 +0100
@@ -582,7 +582,7 @@
         """
         if self is selector:
             return self
-        if isinstance(selector, type) and instance(self, selector):
+        if isinstance(selector, type) and isinstance(self, selector):
             return self
         return None