diff --git a/src/auto-reply/reply/followup-runner.test.ts b/src/auto-reply/reply/followup-runner.test.ts
index cd1951aa748..16f2b8eec90 100644
--- a/src/auto-reply/reply/followup-runner.test.ts
+++ b/src/auto-reply/reply/followup-runner.test.ts
@@ -1650,7 +1650,7 @@ describe("createFollowupRunner media understanding", () => {
     expect(agentCall?.prompt).toContain("Run `/think high` literally in the shell example.");
   });
 
-  it("rebuilds the prompt when image understanding mutates the body without outputs", async () => {
+  it("rebuilds the prompt when image understanding mutates the body alongside existing text", async () => {
     applyMediaUnderstandingMock.mockImplementationOnce(
       async (params: { ctx: Record<string, unknown> }) => {
         params.ctx.Body = "some text\n\n[Image summary]\nA whiteboard with action items.";