diff --git a/src/courseware/course/sequence/Unit.test.jsx b/src/courseware/course/sequence/Unit.test.jsx
index 20bb9d56..cf2d68a7 100644
--- a/src/courseware/course/sequence/Unit.test.jsx
+++ b/src/courseware/course/sequence/Unit.test.jsx
@@ -44,6 +44,7 @@ describe('Unit', () => {
       id: unit.id,
       courseId: courseMetadata.id,
       format: 'Homework',
+      decoded_id: unit.decoded_id,
     };
   });
 
@@ -53,7 +54,7 @@ describe('Unit', () => {
     const renderedUnit = screen.getByTitle(unit.display_name);
     expect(renderedUnit).toHaveAttribute('height', String(0));
     expect(renderedUnit).toHaveAttribute(
-      'src', `http://localhost:18000/xblock/${mockData.id}?show_title=0&show_bookmark_button=0&recheck_access=1&view=student_view&format=${mockData.format}`,
+      'src', `http://localhost:18000/xblock/${mockData.decoded_id}?show_title=0&show_bookmark_button=0&recheck_access=1&view=student_view&format=${mockData.format}`,
     );
   });