diff --git a/tests/test_blacklist.py b/tests/test_blacklist.py
index e12cc8a0..54a5d880 100644
--- a/tests/test_blacklist.py
+++ b/tests/test_blacklist.py
@@ -6,7 +6,7 @@ class TestBlacklist(unittest.TestCase):
 
     def test_blacklist(self):
         black = Blacklist()
-        self.assertListEqual([], black.packages())
+        self.assertTupleEqual((), black.packages())
 
 
 if __name__ == '__main__':
diff --git a/tests/test_checks.py b/tests/test_checks.py
index f55cd736..b3942ece 100644
--- a/tests/test_checks.py
+++ b/tests/test_checks.py
@@ -8,14 +8,14 @@ class TestPkgInstalled(unittest.TestCase):
     def setUp(self):
         self.bin_queries = SBoQueries('sbo')
         self.data = self.bin_queries.repository_data()
-        self.check = Check('sbo', self.data)
+        self.check = Check('sbo')
         self.packages = ['colored', 'sbo-create', 'sun']
 
     def test_check_exists(self):
-        self.assertIsNone(self.check.package_exists_in_the_database(self.packages))
+        self.assertIsNone(self.check.package_exists_in_the_database(self.packages, self.data))
 
     def test_check_unsupported(self):
-        self.assertIsNone(self.check.is_package_unsupported(self.packages))
+        self.assertIsNone(self.check.is_package_unsupported(self.packages, self.data))
 
     def test_check_is_installed(self):
         self.assertIsNone(self.check.is_package_installed(self.packages))
diff --git a/tests/test_utilities.py b/tests/test_utilities.py
index 7d6b7a29..3165785c 100644
--- a/tests/test_utilities.py
+++ b/tests/test_utilities.py
@@ -41,7 +41,7 @@ class TestUtilities(unittest.TestCase):
         self.assertEqual('1', self.utils.read_slackbuild_build_tag('slpkg', 'system', 'sbo'))
 
     def test_is_option(self):
-        self.assertTrue(True, self.utils.is_option(['-P', '--parallel'],
+        self.assertTrue(True, self.utils.is_option(('-P', '--parallel'),
                                                    ['-k', '-p', '-P', '--parallel', '--repository']))
 
     def test_get_file_size(self):