diff --git a/src/layman/common/prime_db_schema/publications.py b/src/layman/common/prime_db_schema/publications.py
index 03a6a1df2..0795f0e04 100644
--- a/src/layman/common/prime_db_schema/publications.py
+++ b/src/layman/common/prime_db_schema/publications.py
@@ -234,10 +234,10 @@ def get_publication_infos_with_metainfo(workspace_name=None, pub_type=None, styl
                                    'image_mosaic': image_mosaic,
                                    'updated_at': updated_at,
                                    '_table_uri': TableUri(
-                                       db_uri_str=external_table_uri.get('db_uri_str'),
-                                       schema=external_table_uri.get('schema'),
-                                       table=external_table_uri.get('table'),
-                                       geo_column=external_table_uri.get('geo_column'),
+                                       db_uri_str=external_table_uri['db_uri_str'],
+                                       schema=external_table_uri['schema'],
+                                       table=external_table_uri['table'],
+                                       geo_column=external_table_uri['geo_column'],
                                    ) if external_table_uri else None,
                                    'native_bounding_box': [xmin, ymin, xmax, ymax],
                                    'native_crs': db_util.get_crs(srid) if srid else None,