diff --git a/src/agents/embedded-agent-runner/run/images.test.ts b/src/agents/embedded-agent-runner/run/images.test.ts
index 03f45679096..e6e8329eaac 100644
--- a/src/agents/embedded-agent-runner/run/images.test.ts
+++ b/src/agents/embedded-agent-runner/run/images.test.ts
@@ -103,6 +103,9 @@ describe("detectImageReferences", () => {
     expectNoImageReferences(
       `Prior turn wrote ${path.join(resolvePreferredOpenClawTmpDir(), "openclaw-cli-images", "stale.jpg")}`,
     );
+    expectNoImageReferences(
+      `[media attached: ${path.join(resolvePreferredOpenClawTmpDir(), "openclaw-cli-images", "stale.jpg")} (image/jpeg)]`,
+    );
     expectNoImageReferences(
       `Prior turn wrote ${path.join(os.tmpdir(), "openclaw", "openclaw-cli-images", "stale.jpg")}`,
     );