Merge branch 'master' into oracle-servicename-optionpr/152

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/sqlalchemy/dialects/postgresql/json.py b/lib/sqlalchemy/dialects/postgresql/json.py
index 250bf5e9d..f38c4a56a 100644
--- a/lib/sqlalchemy/dialects/postgresql/json.py
+++ b/lib/sqlalchemy/dialects/postgresql/json.py
@@ -12,7 +12,7 @@ from .base import ischema_names
 from ... import types as sqltypes
 from ...sql.operators import custom_op
 from ... import sql
-from ...sql import elements
+from ...sql import elements, default_comparator
 from ... import util
 
 __all__ = ('JSON', 'JSONElement', 'JSONB')
@@ -46,7 +46,8 @@ class JSONElement(elements.BinaryExpression):
 
         self._json_opstring = opstring
         operator = custom_op(opstring, precedence=5)
-        right = left._check_literal(left, operator, right)
+        right = default_comparator._check_literal(
+            left, operator, right)
         super(JSONElement, self).__init__(
             left, right, operator, type_=result_type)
 
@@ -77,7 +78,7 @@ class JSONElement(elements.BinaryExpression):
 
     def cast(self, type_):
         """Convert this :class:`.JSONElement` to apply both the 'astext' operator
-        as well as an explicit type cast when evaulated.
+        as well as an explicit type cast when evaluated.
 
         E.g.::