diff --git a/lib/core/src/lib/viewer/components/pdf-viewer/pdf-viewer.component.spec.ts b/lib/core/src/lib/viewer/components/pdf-viewer/pdf-viewer.component.spec.ts
index 43c691dbc5..f5c791b5f7 100644
--- a/lib/core/src/lib/viewer/components/pdf-viewer/pdf-viewer.component.spec.ts
+++ b/lib/core/src/lib/viewer/components/pdf-viewer/pdf-viewer.component.spec.ts
@@ -517,7 +517,7 @@ describe('Test PdfViewer - User interaction', () => {
 
         component.ngOnChanges(changes);
 
-        const getDocumentSpy = pdfjsLibraryMock.getDocument;
+        const getDocumentSpy = pdfjsLibMock.getDocument;
 
         expect(getDocumentSpy).toHaveBeenCalled();
         const loadingArgs = getDocumentSpy.calls.mostRecent().args[0];