--- contrib/python/pyrsistent/py3/tests/checked_map_test.py	(index)
+++ contrib/python/pyrsistent/py3/tests/checked_map_test.py	(working tree)
@@ -127,8 +127,8 @@ class FloatVector(CheckedPVector):
 
 
 class VectorToSetMap(CheckedPMap):
-    __key_type__ = 'checked_map_test.FloatVector'
-    __value_type__ = 'checked_map_test.FloatSet'
+    __key_type__ = '__tests__.checked_map_test.FloatVector'
+    __value_type__ = '__tests__.checked_map_test.FloatSet'
 
 
 def test_type_check_with_string_specification():
--- contrib/python/pyrsistent/py3/tests/checked_vector_test.py	(index)
+++ contrib/python/pyrsistent/py3/tests/checked_vector_test.py	(working tree)
@@ -184,7 +184,7 @@ def test_multiple_optional_types():
 
 
 class NaturalsVectorStr(CheckedPVector):
-    __type__ = 'checked_vector_test.Naturals'
+    __type__ = '__tests__.checked_vector_test.Naturals'
 
 
 def test_check_with_string_specification():
--- contrib/python/pyrsistent/py3/tests/class_test.py	(index)
+++ contrib/python/pyrsistent/py3/tests/class_test.py	(working tree)
@@ -271,8 +271,8 @@ class Numbers(CheckedPVector):
 
 
 class LinkedList(PClass):
-    value = field(type='class_test.Numbers')
-    next = field(type=optional('class_test.LinkedList'))
+    value = field(type='__tests__.class_test.Numbers')
+    next = field(type=optional('__tests__.class_test.LinkedList'))
 
 
 def test_string_as_type_specifier():