From 713a1d3b241d23873ac8c2edeb81e073afd2db87 Mon Sep 17 00:00:00 2001
From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Sat, 17 Nov 2012 22:08:14 -0500
Subject: - add HSTORE - this was a mistake in mutable

---
 lib/sqlalchemy/ext/mutable.py | 3 ---
 1 file changed, 3 deletions(-)

(limited to 'lib/sqlalchemy/ext/mutable.py')

diff --git a/lib/sqlalchemy/ext/mutable.py b/lib/sqlalchemy/ext/mutable.py
index fcc493875..877a73217 100644
--- a/lib/sqlalchemy/ext/mutable.py
+++ b/lib/sqlalchemy/ext/mutable.py
@@ -460,9 +460,6 @@ class Mutable(MutableBase):
 
         """
 
-        if not isinstance(sqltype, types.TypeEngine):
-            raise exc.ArgumentError("Type instance expected, got %s" % sqltype)
-
         def listen_for_type(mapper, class_):
             for prop in mapper.iterate_properties:
                 if hasattr(prop, 'columns'):
-- 
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