diff --git a/unittests/test_cfood.py b/unittests/test_cfood.py
index 62e4b114a1c5cd8f3631f774637f3876c545afd3..e2f15ffdc7929fbd67aee37bccdb0f44cacef104 100644
--- a/unittests/test_cfood.py
+++ b/unittests/test_cfood.py
@@ -32,7 +32,7 @@ from caosadvancedtools.cfood import (AbstractCFood, AbstractFileCFood, CMeal,
                                      get_entity_for_path)
 from caosadvancedtools.crawler import FileCrawler
 from caosadvancedtools.example_cfood import ExampleCFood
-from caosdb.common.models import _parse_single_xml_element
+from linkahead.common.models import _parse_single_xml_element
 from lxml import etree
 from datetime import datetime, timezone
 
diff --git a/unittests/test_h5.py b/unittests/test_h5.py
index 360d4b28938492d0f2af6d696e39dffb1cc3fead..354f70d242a74197819642a76dc059ff8ed9adb0 100644
--- a/unittests/test_h5.py
+++ b/unittests/test_h5.py
@@ -2,6 +2,7 @@ import unittest
 from tempfile import NamedTemporaryFile
 
 import caosdb as db
+import linkahead
 import caosdb.apiutils
 import h5py
 import numpy as np
@@ -77,8 +78,8 @@ 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())
diff --git a/unittests/test_sss_helper.py b/unittests/test_sss_helper.py
index 71408fa6e34f17f18a803e00e944ef9105eae311..c9e6812b479a1af9c9487d5a4ca944c8f1a4a756 100644
--- a/unittests/test_sss_helper.py
+++ b/unittests/test_sss_helper.py
@@ -4,6 +4,7 @@ from os import listdir, remove
 from os.path import abspath, dirname, exists, isfile, join
 
 import caosdb as db
+import linkahead as la
 from caosadvancedtools.serverside.helper import (NameCollector, get_data,
                                                  get_file_via_download,
                                                  init_data_model,
@@ -110,8 +111,8 @@ def test_get_file_via_download():
     # TODO test whether something ends up in the logger
     class NotThere(DummyFile):
         def download(*args, **kwargs):
-            raise db.CaosDBException()
-    with raises(db.CaosDBException):
+            raise la.LinkAheadException()
+    with raises(la.LinkAheadException):
         get_file_via_download(Inconsistent())