diff --git a/setup.py b/setup.py
index 9c250df9..8e4a3ad0 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
 
 setup(
     name='django-mssql-backend',
-    version='2.4.1',
+    version='2.4.2',
     description='Django backend for Microsoft SQL Server',
     long_description=open('README.rst').read(),
     author='ES Solutions AB',
diff --git a/sql_server/pyodbc/base.py b/sql_server/pyodbc/base.py
index 09eba95a..d239b2ec 100644
--- a/sql_server/pyodbc/base.py
+++ b/sql_server/pyodbc/base.py
@@ -97,7 +97,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         'SmallIntegerField': 'smallint',
         'TextField': 'nvarchar(max)',
         'TimeField': 'time',
-        'UUIDField': 'char(36)',
+        'UUIDField': 'char(32)',
     }
     data_type_check_constraints = {
         'PositiveIntegerField': '[%(column)s] >= 0',
diff --git a/sql_server/pyodbc/features.py b/sql_server/pyodbc/features.py
index 4128211d..21a71207 100644
--- a/sql_server/pyodbc/features.py
+++ b/sql_server/pyodbc/features.py
@@ -3,7 +3,7 @@
 
 
 class DatabaseFeatures(BaseDatabaseFeatures):
-    has_native_uuid_field = True
+    has_native_uuid_field = False
     allow_sliced_subqueries_with_in = False
     can_introspect_autofield = True
     can_introspect_small_integer_field = True