diff --git a/mardi_importer/mardi_importer/zbmath/ZBMathSource.py b/mardi_importer/mardi_importer/zbmath/ZBMathSource.py
index 3f6b4e7..457f64d 100644
--- a/mardi_importer/mardi_importer/zbmath/ZBMathSource.py
+++ b/mardi_importer/mardi_importer/zbmath/ZBMathSource.py
@@ -91,12 +91,12 @@ def setup(self):
         self.label_id_dict["keyword_prop"] = self.integrator.get_local_id_by_label( #keyword_prop
             "zbMATH Keywords", "property"
         )
-        self.label_id_dict["review_prop"] = self.api.get_local_id_by_label("review text", "property")
-        self.label_id_dict["mardi_profile_type_prop"] = self.api.get_local_id_by_label("MaRDI profile type", "property")
-        self.label_id_dict["mardi_publication_profile_item"] = self.api.get_local_id_by_label(
+        self.label_id_dict["review_prop"] = self.integrator.get_local_id_by_label("review text", "property")
+        self.label_id_dict["mardi_profile_type_prop"] = self.integrator.get_local_id_by_label("MaRDI profile type", "property")
+        self.label_id_dict["mardi_publication_profile_item"] = self.integrator.get_local_id_by_label(
             "MaRDI publication profile", "item"
         )[0]
-        self.label_id_dict["mardi_person_profile_item"] = self.api.get_local_id_by_label("MaRDI person profile", "item")[0]
+        self.label_id_dict["mardi_person_profile_item"] = self.integrator.get_local_id_by_label("MaRDI person profile", "item")[0]