diff --git a/src/shared/creds-util.c b/src/shared/creds-util.c
index 762dfd675a..6ee18838cc 100644
--- a/src/shared/creds-util.c
+++ b/src/shared/creds-util.c
@@ -853,7 +853,8 @@ int encrypt_credential_and_warn(
                             CRED_AES256_GCM_BY_HOST_AND_TPM2_HMAC_SCOPED,
                             CRED_AES256_GCM_BY_HOST_AND_TPM2_HMAC_WITH_PK_SCOPED)) {
                 if (!uid_is_valid(uid))
-                        return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Scoped credential selected, but no UID specified.");
+                        return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+                                               "Scoped credential key type "SD_ID128_FORMAT_STR" selected, but no UID specified.", SD_ID128_FORMAT_VAL(with_key));
         } else
                 uid = UID_INVALID;