diff --git a/test/test-utils/test-utils.ts b/test/test-utils/test-utils.ts
index 883d1fa7ebe..902dc32e6ea 100644
--- a/test/test-utils/test-utils.ts
+++ b/test/test-utils/test-utils.ts
@@ -149,6 +149,7 @@ export function createTestClient(): MatrixClient {
                 },
             }),
             isCrossSigningReady: jest.fn().mockResolvedValue(false),
+            checkKeyBackupAndEnable: jest.fn().mockResolvedValue(null),
         }),
 
         getPushActionsForEvent: jest.fn(),