Corrected incorrect module name. Fixes #1137.

diff --git a/lib/sqlalchemy/schema.py b/lib/sqlalchemy/schema.py
index e0704f11218a7c6338df4faafb48ecc16a9d89ff..485fceeb260ddfe450546952c3f6c36bb9fae323 100644 (file)
--- a/lib/sqlalchemy/schema.py
+++ b/lib/sqlalchemy/schema.py
@@ -1036,7 +1036,7 @@ class CheckConstraint(Constraint):
 
         super(CheckConstraint, self).__init__(name, deferrable, initially)
         if not isinstance(sqltext, basestring):
-            raise exc.ArgumentError(
+            raise exceptions.ArgumentError(
                 "sqltext must be a string and will be used verbatim.")
         self.sqltext = sqltext