diff -r 434946bb5356 -r 715d691280ad hooks/syncschema.py
--- a/hooks/syncschema.py	Wed Sep 23 11:03:14 2009 +0200
+++ b/hooks/syncschema.py	Wed Sep 23 11:03:38 2009 +0200
@@ -1044,7 +1044,7 @@
 
 class AfterAddConstrainedByHook(SyncSchemaHook):
     __regid__ = 'syncdelconstrainedby'
-    __select__ = SyncSchemaHook.__select__ & hook.match_rtype('constrainted_by')
+    __select__ = SyncSchemaHook.__select__ & hook.match_rtype('constrained_by')
     events = ('after_add_relation',)
 
     def __call__(self):