diff --git a/swh/indexer/metadata_dictionary/cff.py b/swh/indexer/metadata_dictionary/cff.py
index 48be831..b278e5c 100644
--- a/swh/indexer/metadata_dictionary/cff.py
+++ b/swh/indexer/metadata_dictionary/cff.py
@@ -38,19 +38,20 @@ def normalize_authors(self, d: List[dict]) -> Dict[str, list]:
         result = []
         for author in d:
             author_data: Dict[str, Optional[Union[str, Dict]]] = {
-                "@type": SCHEMA_URI + "Person"
+                "@context": {"@vocab": SCHEMA_URI},
+                "@type": "Person"
             }
             if "orcid" in author and isinstance(author["orcid"], str):
                 author_data["@id"] = author["orcid"]
             if "affiliation" in author and isinstance(author["affiliation"], str):
-                author_data[SCHEMA_URI + "affiliation"] = {
-                    "@type": SCHEMA_URI + "Organization",
-                    SCHEMA_URI + "name": author["affiliation"],
+                author_data["affiliation"] = {
+                    "@type": "Organization",
+                    "name": author["affiliation"],
                 }
             if "family-names" in author and isinstance(author["family-names"], str):
-                author_data[SCHEMA_URI + "familyName"] = author["family-names"]
+                author_data["familyName"] = author["family-names"]
             if "given-names" in author and isinstance(author["given-names"], str):
-                author_data[SCHEMA_URI + "givenName"] = author["given-names"]
+                author_data["givenName"] = author["given-names"]
 
             result.append(author_data)