diff --git a/src/relay/pty-handler-retired-pane-surface.test.ts b/src/relay/pty-handler-retired-pane-surface.test.ts
index 959c6f06330..58a323864a4 100644
--- a/src/relay/pty-handler-retired-pane-surface.test.ts
+++ b/src/relay/pty-handler-retired-pane-surface.test.ts
@@ -124,7 +124,7 @@ describe('PtyHandler retires a closed pane surface', () => {
         id,
         expectedIncarnationId: 'different-incarnation'
       })
-    ).rejects.toThrow('PTY incarnation mismatch')
+    ).resolves.toEqual({ fenceUnavailable: true })
 
     expect(term.kill).not.toHaveBeenCalled()
     expect(handler.isPaneSurfaceRetired(PANE_KEY)).toBe(false)