diff --git a/ckanext/dcatapchharvest/dcat_helpers.py b/ckanext/dcatapchharvest/dcat_helpers.py
index 992b758..444d594 100644
--- a/ckanext/dcatapchharvest/dcat_helpers.py
+++ b/ckanext/dcatapchharvest/dcat_helpers.py
@@ -243,11 +243,10 @@ def get_license_values():
         try:
             for license_pref_label in g.objects(subject=ogdch_license_ref,
                                                 predicate=SKOSXL.prefLabel):
-                for literal in g.objects(subject=license_pref_label,
-                                         predicate=SKOSXL.literalForm):
-                    license_literal = literal
+                license_literal = next(g.objects(subject=license_pref_label,
+                                                 predicate=SKOSXL.literalForm))
+                if license_literal is not None:
                     break  # Assume one literal per concept
-
             license_homepages_literal_mapping[license_homepage] = license_literal  # noqa
             license_ref_literal_mapping[ogdch_license_ref] = license_literal
             license_homepage_ref_mapping[license_homepage] = ogdch_license_ref