1 files changed, 13 insertions, 0 deletions
diff --git a/lib/sqlalchemy/databases/mssql.py b/lib/sqlalchemy/databases/mssql.py
index 89cc88398..c297195ca 100644
--- a/lib/sqlalchemy/databases/mssql.py
+++ b/lib/sqlalchemy/databases/mssql.py
@@ -143,6 +143,19 @@ class MSBinary(sqltypes.Binary):
 class MSBoolean(sqltypes.Boolean):
     def get_col_spec(self):
         return "BIT"
+    def convert_result_value(self, value, dialect):
+        if value is None:
+            return None
+        return value and True or False
+    def convert_bind_param(self, value, dialect):
+        if value is True:
+            return 1
+        elif value is False:
+            return 0
+        elif value is None:
+            return None
+        else:
+            return value and True or False
         
 colspecs = {
     sqltypes.Integer : MSInteger,