diff --git a/beat/web/dataformats/tests/tests_api.py b/beat/web/dataformats/tests/tests_api.py
index af655a55a6322bb782f3cacbdae9b6930cc30540..008b727295cd8280cde244ba7bae54e32d525ddd 100644
--- a/beat/web/dataformats/tests/tests_api.py
+++ b/beat/web/dataformats/tests/tests_api.py
@@ -58,13 +58,13 @@ class DataFormatsListRetrieval(DataFormatsAPIBase):
         self.assertEqual(content[0]['short_description'], 'short description 3')
         self.assertEqual(content[0]['extend'], 'johndoe/format1/1')
         self.assertEqual(content[0]['accessibility'], 'public')
-        self.assertFalse(content[0].has_key('is_owner'))
+        self.assertFalse('is_owner' in content[0])
 
         self.assertEqual(content[1]['name'], 'johndoe/format1/1')
         self.assertEqual(content[1]['short_description'], 'short description 1')
         self.assertEqual(content[1]['extend'], None)
         self.assertEqual(content[1]['accessibility'], 'public')
-        self.assertFalse(content[1].has_key('is_owner'))
+        self.assertFalse('is_owner' in content[1])
 
 
     def test_all_accessible_dataformats(self):
@@ -871,9 +871,9 @@ class DataFormatRetrieval(DataFormatsAPIBase):
         self.assertEqual(data['accessibility'], 'public')
         self.assertEqual(data['description'], 'long description 3')
         self.assertTrue(isinstance(data['declaration'], dict))
-        self.assertFalse(data.has_key('is_owner'))
+        self.assertFalse('is_owner' in data)
 
-        self.assertFalse(data.has_key('sharing'))
+        self.assertFalse('sharing' in data)
 
 
     def test_successful_retrieval_of_public_format(self):
@@ -888,7 +888,7 @@ class DataFormatRetrieval(DataFormatsAPIBase):
         self.assertEqual(data['description'], 'long description 3')
         self.assertTrue(isinstance(data['declaration'], dict))
 
-        self.assertFalse(data.has_key('sharing'))
+        self.assertFalse('sharing' in data)
 
 
     def test_successful_retrieval_of_confidential_format(self):
@@ -903,7 +903,7 @@ class DataFormatRetrieval(DataFormatsAPIBase):
         self.assertEqual(data['short_description'], 'short description 5')
         self.assertTrue(isinstance(data['declaration'], dict))
 
-        self.assertFalse(data.has_key('sharing'))
+        self.assertFalse('sharing' in data)
 
 
     def test_successful_retrieval_of_own_public_format(self):
@@ -920,7 +920,7 @@ class DataFormatRetrieval(DataFormatsAPIBase):
 
         self.assertTrue(isinstance(data['sharing'], dict))
         self.assertEqual(data['sharing']['status'], 'public')
-        self.assertFalse(data['sharing'].has_key('shared_with'))
+        self.assertFalse('shared_with' in data['sharing'])
 
 
     def test_successful_retrieval_of_own_private_format(self):