diff --git a/ryu/ofproto/ofproto_v1_2_parser.py b/ryu/ofproto/ofproto_v1_2_parser.py
index 224bcb27..19a95bc4 100644
--- a/ryu/ofproto/ofproto_v1_2_parser.py
+++ b/ryu/ofproto/ofproto_v1_2_parser.py
@@ -1279,8 +1279,8 @@ class OFPGroupFeaturesStats(object):
             ofproto_v1_2.OFP_GROUP_FEATURES_STATS_PACK_STR, buf, offset)
         types = stats[0]
         capabilities = stats[1]
-        max_groups = stats[2:6]
-        actions = stats[6:10]
+        max_groups = list(stats[2:6])
+        actions = list(stats[6:10])
 
         return cls(types, capabilities, max_groups, actions)
 
diff --git a/ryu/tests/unit/ofproto/test_parser_v12.py b/ryu/tests/unit/ofproto/test_parser_v12.py
index 6eb76130..c7eae760 100644
--- a/ryu/tests/unit/ofproto/test_parser_v12.py
+++ b/ryu/tests/unit/ofproto/test_parser_v12.py
@@ -6064,8 +6064,8 @@ class TestOFPGroupFeaturesStats(unittest.TestCase):
         # max_groups and actions after the parser is tuple
         eq_(types, res.types)
         eq_(capabilities, res.capabilities)
-        eq_(tuple(max_groups), res.max_groups)
-        eq_(tuple(actions), res.actions)
+        eq_(max_groups, res.max_groups)
+        eq_(actions, res.actions)
 
     def test_parser_mid(self):
         self._test_parser(self.types, self.capabilities,