diff --git a/src/common/getters.ts b/src/common/getters.ts
index f6328c56..db5b5db6 100644
--- a/src/common/getters.ts
+++ b/src/common/getters.ts
@@ -37,7 +37,7 @@ import { DataFactory } from "n3";
 import type { AccessGrantGConsent } from "../gConsent/type/AccessGrant";
 import type { AccessModes } from "../type/AccessModes";
 import { INHERIT, TYPE, XSD_BOOLEAN, acl, gc, ldp } from "./constants";
-import type { CustomFields } from "../type/CustomFields";
+import type { CustomField } from "../type/CustomFields";
 
 const { namedNode, defaultGraph, quad, literal } = DataFactory;
 
diff --git a/src/gConsent/manage/approveAccessRequest.ts b/src/gConsent/manage/approveAccessRequest.ts
index 97cd9037..0da7b1ce 100644
--- a/src/gConsent/manage/approveAccessRequest.ts
+++ b/src/gConsent/manage/approveAccessRequest.ts
@@ -51,12 +51,12 @@ import { getBaseAccess } from "../util/getBaseAccessVerifiableCredential";
 import { initializeGrantParameters } from "../util/initializeGrantParameters";
 import { getGrantBody, issueAccessVc } from "../util/issueAccessVc";
 import { toVcDataset } from "../../common/util/toVcDataset";
-import type { CustomFields } from "../../type/CustomFields";
+import type { CustomField } from "../../type/CustomFields";
 
 export type ApproveAccessRequestOverrides = Omit<
   Omit<AccessGrantParameters, "status">,
   "expirationDate"
-> & { expirationDate?: Date | null; customFields?: Set<CustomFields> };
+> & { expirationDate?: Date | null; customFields?: Set<CustomField> };
 
 /**
  * Internal function. This is a stopgap until we have proper JSON-LD parsing.
diff --git a/src/gConsent/request/issueAccessRequest.ts b/src/gConsent/request/issueAccessRequest.ts
index f0e5da56..f49e8088 100644
--- a/src/gConsent/request/issueAccessRequest.ts
+++ b/src/gConsent/request/issueAccessRequest.ts
@@ -31,7 +31,7 @@ import type {
   IssueAccessRequestParameters,
 } from "../type/IssueAccessRequestParameters";
 import type { AccessRequest } from "../type/AccessRequest";
-import { type CustomFields, toJson } from "../../type/CustomFields";
+import { type CustomField, toJson } from "../../type/CustomFields";
 import {
   isAccessRequest,
   isRdfjsAccessRequest,
@@ -86,7 +86,7 @@ async function issueAccessRequest(
   params: IssueAccessRequestParameters,
   options: AccessBaseOptions & {
     returnLegacyJsonld: false;
-    customFields?: Set<CustomFields>;
+    customFields?: Set<CustomField>;
   },
 ): Promise<DatasetWithId>;
 /**
@@ -102,7 +102,7 @@ async function issueAccessRequest(
   params: IssueAccessRequestParameters,
   options?: AccessBaseOptions & {
     returnLegacyJsonld?: true;
-    customFields?: Set<CustomFields>;
+    customFields?: Set<CustomField>;
   },
 ): Promise<AccessRequest>;
 /**
@@ -118,7 +118,7 @@ async function issueAccessRequest(
   params: IssueAccessRequestParameters,
   options?: AccessBaseOptions & {
     returnLegacyJsonld?: boolean;
-    customFields?: Set<CustomFields>;
+    customFields?: Set<CustomField>;
   },
 ): Promise<DatasetWithId>;
 /**
@@ -128,13 +128,13 @@ async function issueAccessRequest(
   params: DeprecatedAccessRequestParameters,
   options?: AccessBaseOptions & {
     returnLegacyJsonld?: boolean;
-    customFields?: Set<CustomFields>;
+    customFields?: Set<CustomField>;
   },
 ): Promise<AccessRequest>;
 async function issueAccessRequest(
   params: IssueAccessRequestParameters,
   options: AccessBaseOptions & {
-    customFields?: Set<CustomFields>;
+    customFields?: Set<CustomField>;
     returnLegacyJsonld?: boolean;
   } = {},
 ): Promise<DatasetWithId> {
diff --git a/src/gConsent/util/issueAccessVc.ts b/src/gConsent/util/issueAccessVc.ts
index cff595bb..90776356 100644
--- a/src/gConsent/util/issueAccessVc.ts
+++ b/src/gConsent/util/issueAccessVc.ts
@@ -52,7 +52,7 @@ import { getAccessApiEndpoint } from "../discover/getAccessApiEndpoint";
 import { accessToResourceAccessModeArray } from "./accessToResourceAccessModeArray";
 import { isBaseRequest } from "../guard/isBaseRequest";
 import type { AccessCredentialType } from "../type/AccessCredentialType";
-import type { CustomFields } from "../../type/CustomFields";
+import type { CustomField } from "../../type/CustomFields";
 
 function getGConsentAttributes(
   params: AccessRequestParameters,
@@ -147,7 +147,7 @@ function getBaseBody(
 
 export function getRequestBody(
   params: AccessRequestParameters,
-  options?: Partial<{ customFields: Record<string, CustomFields["value"]> }>,
+  options?: Partial<{ customFields: Record<string, CustomField["value"]> }>,
 ): AccessRequestBody {
   const base = getBaseBody(params, "BaseRequestBody") as AccessRequestBody;
   if (typeof options?.customFields === "object") {
diff --git a/src/index.ts b/src/index.ts
index 32f6b4f3..d6260dec 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -37,7 +37,7 @@ export type { AccessParameters } from "./gConsent/manage/getAccessGrantAll";
 
 export type { AccessGrantAny } from "./type/AccessGrant";
 export type { AccessModes } from "./type/AccessModes";
-export type { CustomFields } from "./type/CustomFields";
+export type { CustomField as CustomFields } from "./type/CustomFields";
 export type { FetchOptions } from "./type/FetchOptions";
 export type { RedirectOptions } from "./type/RedirectOptions";
 
diff --git a/src/type/CustomFields.ts b/src/type/CustomFields.ts
index 6fbcc20d..bfe1bb5e 100644
--- a/src/type/CustomFields.ts
+++ b/src/type/CustomFields.ts
@@ -19,7 +19,7 @@
 // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
-export type CustomFields = {
+export type CustomField = {
   /* The custom field name (this must be a URL). */
   key: URL;
   /* The custom field value (this must be a literal). */
@@ -33,8 +33,8 @@ export type CustomFields = {
  * @hidden
  */
 export const toJson = (
-  c: Set<CustomFields> = new Set(),
-): Record<string, CustomFields["value"]> => {
+  c: Set<CustomField> = new Set(),
+): Record<string, CustomField["value"]> => {
   return (
     Array.from(c)
       // Check that all the provided custom fields match the expected type,
@@ -50,7 +50,7 @@ export const toJson = (
       // Collapse all the JSON object entries into a single object.
       .reduce(
         (acc, cur) => Object.assign(acc, cur),
-        {} as Record<string, CustomFields["value"]>,
+        {} as Record<string, CustomField["value"]>,
       )
   );
 };