diff --git a/invenio_rdm_records/services/pids/providers/external.py b/invenio_rdm_records/services/pids/providers/external.py
index 0ef7dbf37..dedd11c2e 100644
--- a/invenio_rdm_records/services/pids/providers/external.py
+++ b/invenio_rdm_records/services/pids/providers/external.py
@@ -41,9 +41,9 @@ def __call__(self, record, identifier, provider, errors):
         for p in self.prefixes:
             if identifier.startswith(p):
                 errors.append(
-                    _("The prefix '{prefix}' is managed by {sitename}. Please supply an external DOI or select 'No' to have a DOI generated for you.").format(
-                        prefix=p, sitename=current_app.config["THEME_SITENAME"]
-                    )
+                    _(
+                        "The prefix '{prefix}' is managed by {sitename}. Please supply an external DOI or select 'No' to have a DOI generated for you."
+                    ).format(prefix=p, sitename=current_app.config["THEME_SITENAME"])
                 )
                 # Bail early
                 return
diff --git a/tests/conftest.py b/tests/conftest.py
index 68bce23f8..babac43f2 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -179,6 +179,8 @@ def app_config(app_config, mock_datacite_client):
     for config_key in supported_configurations:
         app_config[config_key] = getattr(config, config_key, None)
 
+    app_config["THEME_SITENAME"] = "Invenio"
+
     app_config["RECORDS_REFRESOLVER_CLS"] = (
         "invenio_records.resolver.InvenioRefResolver"
     )
diff --git a/tests/resources/test_resources_pids.py b/tests/resources/test_resources_pids.py
index 8da039a71..9406928a5 100644
--- a/tests/resources/test_resources_pids.py
+++ b/tests/resources/test_resources_pids.py
@@ -128,7 +128,9 @@ def test_external_doi_blocked_prefix(
     assert draft.json["errors"] == [
         {
             "field": "pids.doi",
-            "messages": ["The prefix '10.1234' is administrated locally."],
+            "messages": [
+                "The prefix '10.1234' is managed by Invenio. Please supply an external DOI or select 'No' to have a DOI generated for you."
+            ],
         }
     ]
 
diff --git a/tests/services/pids/test_pids_service.py b/tests/services/pids/test_pids_service.py
index 035f871d9..d6a0d7951 100644
--- a/tests/services/pids/test_pids_service.py
+++ b/tests/services/pids/test_pids_service.py
@@ -258,7 +258,7 @@ def test_pids_duplicates(running_app, search_clear, minimal_record):
         "field": "pids.doi",
         "messages": [
             f"doi:{doi} already exists.",
-            "The prefix '10.1234' is administrated locally.",
+            "The prefix '10.1234' is managed by Invenio. Please supply an external DOI or select 'No' to have a DOI generated for you.",
         ],
     }
     assert error_msg in duplicated_draft.errors
@@ -271,7 +271,7 @@ def test_pids_duplicates(running_app, search_clear, minimal_record):
         "field": "pids.doi",
         "messages": [
             f"doi:{doi} already exists.",
-            "The prefix '10.1234' is administrated locally.",
+            "The prefix '10.1234' is managed by Invenio. Please supply an external DOI or select 'No' to have a DOI generated for you.",
         ],
     }
     assert error_msg in duplicated_draft.errors