diff --git a/tests/test_protocol_cybinary.py b/tests/test_protocol_cybinary.py
index c8ed157..e074048 100644
--- a/tests/test_protocol_cybinary.py
+++ b/tests/test_protocol_cybinary.py
@@ -22,8 +22,8 @@
 
 class TItem(TPayload):
     thrift_spec = {
-        1: (TType.I32, "id"),
-        2: (TType.LIST, "phones", (TType.STRING)),
+        1: (TType.I32, "id", False),
+        2: (TType.LIST, "phones", TType.STRING, False),
     }
     default_spec = [("id", None), ("phones", None)]
 
@@ -214,8 +214,8 @@ def test_read_huge_args():
 
     class Hello(TPayload):
         thrift_spec = {
-            1: (TType.STRING, "name"),
-            2: (TType.STRING, "world"),
+            1: (TType.STRING, "name", False),
+            2: (TType.STRING, "world", False),
         }
         default_spec = [("name", None), ("world", None)]
 
@@ -346,8 +346,8 @@ def test_read_wrong_arg_type():
 
     class TWrongTypeItem(TPayload):
         thrift_spec = {
-            1: (TType.STRING, "id"),
-            2: (TType.LIST, "phones", (TType.STRING)),
+            1: (TType.STRING, "id", False),
+            2: (TType.LIST, "phones", TType.STRING, False),
         }
         default_spec = [("id", None), ("phones", None)]
 
diff --git a/tests/test_tracking.py b/tests/test_tracking.py
index 2395324..d9c3fcf 100644
--- a/tests/test_tracking.py
+++ b/tests/test_tracking.py
@@ -61,6 +61,10 @@ def remove(self, name):
             c.add(person)
         return True
 
+    def get_phonenumbers(self, name, count):
+        return [addressbook.PhoneNumber(number="sdaf"),
+                addressbook.PhoneNumber(number='saf')]
+
     def add(self, person):
         with client(port=6099) as c:
             c.hello("jane")
@@ -266,6 +270,9 @@ def test_tracked_client_not_tracked_server(not_tracked_server):
         assert c._upgraded is False
         c.ping()
         c.hello("cat")
+        a = c.get_phonenumbers("hello", 54)
+        assert len(a) == 2
+        assert a[0].number == 'sdaf' and a[1].number == 'saf'
 
 
 def test_request_id_func():
diff --git a/thriftpy/protocol/cybin/cybin.pyx b/thriftpy/protocol/cybin/cybin.pyx
index 72915dd..a5e51fd 100644
--- a/thriftpy/protocol/cybin/cybin.pyx
+++ b/thriftpy/protocol/cybin/cybin.pyx
@@ -118,7 +118,7 @@ cdef inline read_struct(CyTransportBase buf, obj):
             continue
 
         name = field_spec[1]
-        if len(field_spec) == 2:
+        if len(field_spec) <= 3:
             spec = None
         else:
             spec = field_spec[2]
@@ -138,7 +138,7 @@ cdef inline write_struct(CyTransportBase buf, obj):
     for fid, field_spec in thrift_spec.items():
         f_type = field_spec[0]
         f_name = field_spec[1]
-        if len(field_spec) == 2:
+        if len(field_spec) <= 3:
             container_spec = None
         else:
             container_spec = field_spec[2]
diff --git a/thriftpy/thrift.py b/thriftpy/thrift.py
index ffbed4e..9b64ed9 100644
--- a/thriftpy/thrift.py
+++ b/thriftpy/thrift.py
@@ -318,8 +318,8 @@ class TApplicationException(TException):
     """Application level thrift exceptions."""
 
     thrift_spec = {
-        1: (TType.STRING, 'message'),
-        2: (TType.I32, 'type'),
+        1: (TType.STRING, 'message', False),
+        2: (TType.I32, 'type', False),
     }
 
     UNKNOWN = 0