diff --git a/demo/54-custom-properties.ts b/demo/54-custom-properties.ts
index f6ef7cf778..4aad3864c9 100644
--- a/demo/54-custom-properties.ts
+++ b/demo/54-custom-properties.ts
@@ -9,15 +9,20 @@ import { Document, Packer } from "../build";
 
 const doc = new Document(
     // Standard properties
-    { creator: "Creator", title: "Title", subject: "Subject", description: "Description" },
+    {
+        creator: "Creator",
+        title: "Title",
+        subject: "Subject",
+        description: "Description",
+        customProperties: [
+            { name: "Subtitle", value: "Subtitle" },
+            { name: "Address", value: "Address" },
+        ],
+    },
     // No file properties
     {},
     // No sections
     [],
-    [
-        { name: "Subtitle", value: "Subtitle" },
-        { name: "Address", value: "Address" },
-    ]
 );
 
 Packer.toBuffer(doc).then((buffer) => {
diff --git a/src/file/core-properties/properties.ts b/src/file/core-properties/properties.ts
index 8e3921df0c..17a4baed2a 100644
--- a/src/file/core-properties/properties.ts
+++ b/src/file/core-properties/properties.ts
@@ -1,4 +1,5 @@
 import { XmlComponent } from "file/xml-components";
+import { ICustomPropertyOptions } from "../custom-properties";
 import { IDocumentBackgroundOptions } from "../document";
 
 import { DocumentAttributes } from "../document/document-attributes";
@@ -24,6 +25,7 @@ export interface IPropertiesOptions {
         readonly trackRevisions?: boolean;
     };
     readonly compatabilityModeVersion?: number;
+    readonly customProperties?: ICustomPropertyOptions[];
 }
 
 export class CoreProperties extends XmlComponent {
diff --git a/src/file/file.ts b/src/file/file.ts
index 2a1c294778..e91906f3d1 100644
--- a/src/file/file.ts
+++ b/src/file/file.ts
@@ -1,7 +1,7 @@
 import { AppProperties } from "./app-properties/app-properties";
 import { ContentTypes } from "./content-types/content-types";
 import { CoreProperties, IPropertiesOptions } from "./core-properties";
-import { CustomProperties, ICustomPropertyOptions } from "./custom-properties";
+import { CustomProperties } from "./custom-properties";
 import { DocumentWrapper } from "./document-wrapper";
 import {
     FooterReferenceType,
@@ -69,7 +69,6 @@ export class File {
         },
         fileProperties: IFileProperties = {},
         sections: ISectionOptions[] = [],
-        customProperties: ICustomPropertyOptions[] = [],
     ) {
         this.coreProperties = new CoreProperties(options);
         this.numbering = new Numbering(
@@ -80,7 +79,7 @@ export class File {
                   },
         );
         this.fileRelationships = new Relationships();
-        this.customProperties = new CustomProperties(customProperties);
+        this.customProperties = new CustomProperties(options.customProperties ?? []);
         this.appProperties = new AppProperties();
         this.footnotesWrapper = new FootnotesWrapper();
         this.contentTypes = new ContentTypes();