diff --git a/data/issuer-config.json b/data/issuer-config.json
index cf78fe1..49ea813 100644
--- a/data/issuer-config.json
+++ b/data/issuer-config.json
@@ -77,7 +77,7 @@
         }
       ],
       "credential_definition": {
-        "type": "VerifiablePortableDocumentA2",
+        "type": ["VerifiablePortableDocumentA2"],
         "claims": {
           "given_name": {
             "display": [