diff --git a/unittests/test_h5.py b/unittests/test_h5.py
index 360d4b28938492d0f2af6d696e39dffb1cc3fead..caf1eab4827e8e9b4666f6c80f01bd7818cc76f2 100644
--- a/unittests/test_h5.py
+++ b/unittests/test_h5.py
@@ -1,8 +1,8 @@
 import unittest
 from tempfile import NamedTemporaryFile
 
-import caosdb as db
-import caosdb.apiutils
+import linkahead as db
+import linkahead.apiutils
 import h5py
 import numpy as np
 from caosadvancedtools.cfoods import h5
@@ -77,8 +77,8 @@ class H5CFoodTest(unittest.TestCase):
         # TODO this does probably break the code: The function will not be
         # restored correctly.
         # Change it to use the BaseMockUpTest
-        real_retrieve = caosdb.apiutils.retrieve_entity_with_id
-        caosdb.apiutils.retrieve_entity_with_id = dummy_get
+        real_retrieve = linkahead.apiutils.retrieve_entity_with_id
+        linkahead.apiutils.retrieve_entity_with_id = dummy_get
 
         # should run without problem
         h5.collect_existing_structure(db.Record(), db.Record(id=234), h5.EntityMapping())
@@ -92,6 +92,8 @@ class H5CFoodTest(unittest.TestCase):
         r_target.add_property("test", value=r_child, datatype=db.REFERENCE)
         em = h5.EntityMapping()
         h5.collect_existing_structure(r_target, r_exist, em)
+        print(em.to_existing[r_child._cuid])
+        print(ENTS[101])
         self.assertTrue(em.to_existing[r_child._cuid] is ENTS[101])
         self.assertTrue(em.to_target[101] is r_child)
 
@@ -151,7 +153,7 @@ class H5CFoodTest(unittest.TestCase):
         self.assertEqual(em.to_existing[r_child2._cuid], ENTS[101])
         self.assertEqual(em.to_target[101], r_child2)
 
-        caosdb.apiutils.retrieve_entity_with_id = real_retrieve
+        linkahead.apiutils.retrieve_entity_with_id = real_retrieve
 
     def test_h5_attr_to_property(self):
 
@@ -160,7 +162,8 @@ class H5CFoodTest(unittest.TestCase):
         test_float = np.float_(1.0)
         test_str = "Test"
         test_complex: complex = 2+3j
-        self.assertRaises(NotImplementedError, h5_attr_to_property, test_int)  # only numpy-integers processed?
+        self.assertRaises(NotImplementedError, h5_attr_to_property,
+                          test_int)  # only numpy-integers processed?
         self.assertTupleEqual((1, db.INTEGER), h5_attr_to_property(test_integer))
         self.assertTupleEqual((1.0, db.DOUBLE), h5_attr_to_property(test_float))
         self.assertTupleEqual(("Test", db.TEXT), h5_attr_to_property(test_str))
@@ -187,4 +190,5 @@ class H5CFoodTest(unittest.TestCase):
         # Test scalar values given as np.array
         self.assertTupleEqual((1, db.INTEGER), h5_attr_to_property(np.array(1)))
         self.assertTupleEqual((1.123, db.DOUBLE), h5_attr_to_property(np.array(1.123)))
-        self.assertTupleEqual(('Hello World', db.TEXT), h5_attr_to_property(np.array("Hello World")))
+        self.assertTupleEqual(('Hello World', db.TEXT),
+                              h5_attr_to_property(np.array("Hello World")))