diff --git a/extensions/matrix/src/matrix/sdk.test.ts b/extensions/matrix/src/matrix/sdk.test.ts
index ddfa24d0c36..693e638e2ad 100644
--- a/extensions/matrix/src/matrix/sdk.test.ts
+++ b/extensions/matrix/src/matrix/sdk.test.ts
@@ -292,17 +292,21 @@ describe("MatrixClient request hardening", () => {
     expect(fetchMock).not.toHaveBeenCalled();
   });
 
-  it("injects a guarded fetchFn into matrix-js-sdk", () => {
-    const client = new MatrixClient("https://matrix.example.org", "token", {
-      ssrfPolicy: { allowPrivateNetwork: true },
-    });
+  it("injects a guarded fetchFn into matrix-js-sdk", async () => {
+    const client = new MatrixClient("https://matrix.example.org", "token");
     expect(client).toBeInstanceOf(MatrixClient);
 
     expect(lastCreateClientOpts).toMatchObject({
       baseUrl: "https://matrix.example.org",
       accessToken: "token",
     });
-    expect(lastCreateClientOpts?.fetchFn).toEqual(expect.any(Function));
+    const fetchFn = lastCreateClientOpts?.fetchFn as typeof fetch | undefined;
+    if (!fetchFn) {
+      throw new Error("expected Matrix SDK guarded fetch");
+    }
+    await expect(fetchFn("http://127.0.0.1/_matrix/client/v3/account/whoami")).rejects.toThrow(
+      /private|blocked|not allowed/i,
+    );
   });
 
   it("prefers authenticated client media downloads", async () => {
@@ -603,7 +607,6 @@ describe("MatrixClient request hardening", () => {
       if (!store) {
         throw new Error("expected Matrix sync store");
       }
-      expect(store.flush).toEqual(expect.any(Function));
       const flushSpy = vi.spyOn(store, "flush").mockResolvedValue();
 
       await client.stopAndPersist();
@@ -1167,11 +1170,17 @@ describe("MatrixClient event bridge", () => {
     });
 
     await vi.waitFor(() => {
-      expect(releaseSyncReady).toEqual(expect.any(Function));
+      if (!releaseSyncReady) {
+        throw new Error("expected Matrix sync ready release callback");
+      }
     });
     expect(resolved).toBe(false);
 
-    releaseSyncReady?.();
+    const release = releaseSyncReady;
+    if (!release) {
+      throw new Error("expected Matrix sync ready release callback");
+    }
+    release();
     await startPromise;
 
     expect(resolved).toBe(true);
diff --git a/extensions/slack/src/monitor/message-handler/dispatch.preview-fallback.test.ts b/extensions/slack/src/monitor/message-handler/dispatch.preview-fallback.test.ts
index 3b1a1388ea3..689ee830b07 100644
--- a/extensions/slack/src/monitor/message-handler/dispatch.preview-fallback.test.ts
+++ b/extensions/slack/src/monitor/message-handler/dispatch.preview-fallback.test.ts
@@ -904,7 +904,7 @@ describe("dispatchPreparedSlackMessage preview fallback", () => {
     );
 
     expect(capturedReplyOptions?.suppressDefaultToolProgressMessages).toBe(true);
-    expect(requireCapturedItemEventHandler()).toEqual(expect.any(Function));
+    await requireCapturedItemEventHandler()({ progressText: "hidden progress" });
   });
 
   it("does not create a blank Slack progress draft when label and lines are disabled", async () => {
@@ -943,7 +943,7 @@ describe("dispatchPreparedSlackMessage preview fallback", () => {
     );
 
     expect(capturedReplyOptions?.suppressDefaultToolProgressMessages).toBe(true);
-    expect(requireCapturedItemEventHandler()).toEqual(expect.any(Function));
+    await requireCapturedItemEventHandler()({ progressText: "hidden partial progress" });
   });
 
   it("starts native streams in the first-reply thread for top-level channel messages", async () => {