diff --git a/src/import-dotx/import-dotx.ts b/src/import-dotx/import-dotx.ts
index 6c509c6383..80cd0666dd 100644
--- a/src/import-dotx/import-dotx.ts
+++ b/src/import-dotx/import-dotx.ts
@@ -46,7 +46,7 @@ export interface IDocumentTemplate {
 }
 
 export class ImportDotx {
-    public async extract(data: string | number[] | Uint8Array | ArrayBuffer | Blob | NodeJS.ReadableStream): Promise<IDocumentTemplate> {
+    public async extract(data: Buffer | string | number[] | Uint8Array | ArrayBuffer | Blob | NodeJS.ReadableStream): Promise<IDocumentTemplate> {
         const zipContent = await JSZip.loadAsync(data);
 
         const documentContent = await zipContent.files["word/document.xml"].async("text");