diff --git a/src/file/footer-wrapper.ts b/src/file/footer-wrapper.ts
index 1ffc557bba..403e3b7c8f 100644
--- a/src/file/footer-wrapper.ts
+++ b/src/file/footer-wrapper.ts
@@ -15,9 +15,10 @@ export interface IDocumentFooter {
 export class FooterWrapper {
     private readonly footer: Footer;
     private readonly relationships: Relationships;
-    private readonly media = new Media();
+    private readonly media: Media;
 
     constructor(referenceId: number, initContent?: XmlComponent) {
+        this.media = new Media();
         this.footer = new Footer(referenceId, initContent);
         this.relationships = new Relationships();
     }
diff --git a/src/file/header-wrapper.ts b/src/file/header-wrapper.ts
index 95150a1d2d..c2ed4841f1 100644
--- a/src/file/header-wrapper.ts
+++ b/src/file/header-wrapper.ts
@@ -15,10 +15,10 @@ export interface IDocumentHeader {
 export class HeaderWrapper {
     private readonly header: Header;
     private readonly relationships: Relationships;
-    private readonly media = new Media();
+    private readonly media: Media;
 
-    // constructor(private readonly media: Media, referenceId: number, initContent? : XmlComponent) {
     constructor(referenceId: number, initContent?: XmlComponent) {
+        this.media = new Media();
         this.header = new Header(referenceId, initContent);
         this.relationships = new Relationships();
     }