diff --git a/package.json b/package.json
index 4b90312db..7e92c1816 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hmcts/media-viewer",
-  "version": "4.0.8-exui-2537-rc3",
+  "version": "4.0.8-exui-2537-rc4",
   "scripts": {
     "ng": "ng",
     "start": "ng serve",
diff --git a/projects/media-viewer/package.json b/projects/media-viewer/package.json
index 16af31743..a6130a449 100644
--- a/projects/media-viewer/package.json
+++ b/projects/media-viewer/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hmcts/media-viewer",
-  "version": "4.0.8-exui-2537-rc3",
+  "version": "4.0.8-exui-2537-rc4",
   "description": "Media Viewer",
   "keywords": [
     "Angular",
diff --git a/projects/media-viewer/src/lib/viewers/pdf-viewer/pdf-js/pdf-js-wrapper.spec.ts b/projects/media-viewer/src/lib/viewers/pdf-viewer/pdf-js/pdf-js-wrapper.spec.ts
index 2f8799029..409ffb43f 100644
--- a/projects/media-viewer/src/lib/viewers/pdf-viewer/pdf-js/pdf-js-wrapper.spec.ts
+++ b/projects/media-viewer/src/lib/viewers/pdf-viewer/pdf-js/pdf-js-wrapper.spec.ts
@@ -64,7 +64,7 @@ describe('PdfJsWrapper', () => {
     const downloadSpy = spyOn(downloadManager, 'download');
 
     wrapper.downloadFile('http://derp.com/derp.jpg', 'derp.jpg');
-    expect(downloadSpy).toHaveBeenCalledWith('http://derp.com/derp.jpg', 'derp.jpg', {});
+    expect(downloadSpy).toHaveBeenCalledWith(null, 'http://derp.com/derp.jpg', 'derp.jpg');
   });
 
   it('loads a document', fakeAsync(() => {