diff --git a/oarepo_model_builder/invenio/templates/invenio_record_search_options.py.jinja2 b/oarepo_model_builder/invenio/templates/invenio_record_search_options.py.jinja2
index 0df18782..909cb5d0 100644
--- a/oarepo_model_builder/invenio/templates/invenio_record_search_options.py.jinja2
+++ b/oarepo_model_builder/invenio/templates/invenio_record_search_options.py.jinja2
@@ -15,7 +15,7 @@ class {{ vars.search_options| class_header }}:
 
                 {%  endfor %}
             {% for base_class in vars.search_options.base_classes %}
-                **getattr(({{ base_class|base_name }}, 'facet_groups', {}).get('{{group }}', {}))
+                **getattr({{ base_class|base_name }}, 'facet_groups', {}).get('{{group }}', {})
             {% endfor %}
             },
         {%  endfor %}
diff --git a/setup.cfg b/setup.cfg
index 9dee389b..d067b096 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = oarepo-model-builder
-version = 4.0.56
+version = 4.0.57
 description = A utility library that generates OARepo required data model files from a JSON specification file
 authors = Miroslav Bauer <bauer@cesnet.cz>, Miroslav Simek <simeki@vscht.cz>
 readme = README.md
diff --git a/tests/test_search_options.py b/tests/test_search_options.py
index 7676c274..30a18da8 100644
--- a/tests/test_search_options.py
+++ b/tests/test_search_options.py
@@ -69,7 +69,7 @@ class TestSearchOptions(InvenioSearchOptions):
 
                 
             
-                **getattr((InvenioSearchOptions, 'facet_groups', {}).get('curator', {}))
+                **getattr(InvenioSearchOptions, 'facet_groups', {}).get('curator', {})
             
             },
         
@@ -364,11 +364,11 @@ class TestSearchOptions(BaseSearchOptions):
             'curator': {
                     'a' : facets.a,
                     'g' : facets.g,
-                **getattr((BaseSearchOptions, 'facet_groups', {}).get('curator', {}))
+                **getattr(BaseSearchOptions, 'facet_groups', {}).get('curator', {})
             },
             'user': {
                     'a' : facets.a,
-                **getattr((BaseSearchOptions, 'facet_groups', {}).get('user', {}))
+                **getattr(BaseSearchOptions, 'facet_groups', {}).get('user', {})
             },
     }