diff --git a/src/agents/claude-cli-runner.test.ts b/src/agents/claude-cli-runner.test.ts
index 6414aecb5..7825d00da 100644
--- a/src/agents/claude-cli-runner.test.ts
+++ b/src/agents/claude-cli-runner.test.ts
@@ -61,7 +61,7 @@ describe("runClaudeCliAgent", () => {
     expect(argv).toContain("hi");
   });
 
-  it("uses provided --session-id when a claude session id is provided", async () => {
+  it("uses --resume when a claude session id is provided", async () => {
     runCommandWithTimeoutMock.mockResolvedValueOnce({
       stdout: JSON.stringify({ message: "ok", session_id: "sid-2" }),
       stderr: "",
@@ -83,7 +83,7 @@ describe("runClaudeCliAgent", () => {
 
     expect(runCommandWithTimeoutMock).toHaveBeenCalledTimes(1);
     const argv = runCommandWithTimeoutMock.mock.calls[0]?.[0] as string[];
-    expect(argv).toContain("--session-id");
+    expect(argv).toContain("--resume");
     expect(argv).toContain("c9d7b831-1c31-4d22-80b9-1e50ca207d4b");
     expect(argv).toContain("hi");
   });