diff --git a/app/soapbox/jest/test-setup.ts b/app/soapbox/jest/test-setup.ts
index 82beb982a4..f091e3676c 100644
--- a/app/soapbox/jest/test-setup.ts
+++ b/app/soapbox/jest/test-setup.ts
@@ -7,7 +7,7 @@ jest.mock('soapbox/api');
 afterEach(() => clearApiMocks());
 
 // Mock external dependencies
-jest.mock('uuid', () => ({ v4: jest.fn(() => 1) }));
+jest.mock('uuid', () => ({ v4: jest.fn(() => '1') }));
 
 const intersectionObserverMock = () => ({ observe: () => null, disconnect: () => null });
 window.IntersectionObserver = jest.fn().mockImplementation(intersectionObserverMock);