diff --git a/navipy/database/test.py b/navipy/database/test.py
index ed7763a2b0019bea7d0d75e2e7f4e4e59906264d..6369748430e6725abd035613954c9c526b19e6de 100644
--- a/navipy/database/test.py
+++ b/navipy/database/test.py
@@ -49,11 +49,9 @@ class TestCase(unittest.TestCase):
         # channels must be strings or char
         for n in [3, 8.7, None, np.nan]:
             with self.assertRaises(TypeError):
-                DataBase(self.mydb_filename, n)
-        # with self.assertRaises(ValueError):
-        #    db=DataBase(self.mydb_filename,[3,4])
+                DataBase(self.mydb_filename, channels=n)
         with self.assertRaises(ValueError):
-            DataBase(self.mydb_filename, [None, 2])
+            DataBase(self.mydb_filename, channels=[None, 2])
 
     def test_table_exist(self):
         """
diff --git a/navipy/resources/database.db b/navipy/resources/database.db
index 1613e98f2dcb18043a195ca0f260d2c60252ed54..de4233df7e98bf6161730883f9622ac24897f286 100644
Binary files a/navipy/resources/database.db and b/navipy/resources/database.db differ
diff --git a/navipy/resources/database2.db b/navipy/resources/database2.db
index 7d9ff3935066ecd06f0b7c5a80635e49bd70a5dd..5330c6e5ae08f742c1b72acc74fbbc01fc2b808c 100644
Binary files a/navipy/resources/database2.db and b/navipy/resources/database2.db differ