diff --git a/extensions/chaeo/test_zstack.py b/extensions/chaeo/test_zstack.py
index 78baa64c50f6a5ef167c261f63064199e6840fb9..3a517907dcc1e0e344df3eeffe57f035f3da0c1b 100644
--- a/extensions/chaeo/test_zstack.py
+++ b/extensions/chaeo/test_zstack.py
@@ -2,13 +2,19 @@ import unittest
 
 from extensions.chaeo.conf.testing import multichannel_zstack, pixel_classifier
 from extensions.chaeo.zstack import build_stack_mask
-from model_server.accessors import InMemoryDataAccessor
+from model_server.accessors import generate_file_accessor, InMemoryDataAccessor
+from extensions.ilastik.models import IlastikObjectClassifierModel, IlastikPixelClassifierModel
 
 class TestZStackDerivedDataProducts(unittest.TestCase):
 
     def setUp(self) -> None:
         # need test data incl obj map
-        self.zstack =
+        self.zstack = generate_file_accessor(multichannel_zstack['path'])
+
+        pxmodel = IlastikPixelClassifierModel(
+            project_file=pixel_classifier['path']
+        )
+        self.pxmap = None
         self.obmap = None
         self.stack = None