diff -r 10694dd136f3 -r 176c1edf51b0 misc/migration/3.18.0_Any.py
--- a/misc/migration/3.18.0_Any.py	Thu Dec 12 15:38:49 2013 +0100
+++ b/misc/migration/3.18.0_Any.py	Thu Dec 19 17:09:16 2013 +0100
@@ -86,6 +86,6 @@
 
 for rschema in schema.relations():
     if rschema.symmetric:
-        with session.allow_all_hooks_but('activeintegrity'):
+        with session.deny_all_hooks_but():
             rql('SET X %(r)s Y WHERE Y %(r)s X, NOT X %(r)s Y' % {'r': rschema.type})
     commit()