diff --git a/src/channels/plugins/slack.actions.test.ts b/src/channels/plugins/slack.actions.test.ts
index a6644e3965d..844da4f09ad 100644
--- a/src/channels/plugins/slack.actions.test.ts
+++ b/src/channels/plugins/slack.actions.test.ts
@@ -1,4 +1,4 @@
-import { describe, expect, it, vi } from "vitest";
+import { beforeEach, describe, expect, it, vi } from "vitest";
 import type { OpenClawConfig } from "../../config/config.js";
 import { createSlackActions } from "./slack.actions.js";
 
@@ -9,6 +9,10 @@ vi.mock("../../agents/tools/slack-actions.js", () => ({
 }));
 
 describe("slack actions adapter", () => {
+  beforeEach(() => {
+    handleSlackAction.mockClear();
+  });
+
   it("forwards threadId for read", async () => {
     const cfg = { channels: { slack: { botToken: "tok" } } } as OpenClawConfig;
     const actions = createSlackActions("slack");
@@ -30,4 +34,24 @@ describe("slack actions adapter", () => {
       threadId: "171234.567",
     });
   });
+
+  it("forwards normalized limit for emoji-list", async () => {
+    const cfg = { channels: { slack: { botToken: "tok" } } } as OpenClawConfig;
+    const actions = createSlackActions("slack");
+
+    await actions.handleAction?.({
+      channel: "slack",
+      action: "emoji-list",
+      cfg,
+      params: {
+        limit: "2.9",
+      },
+    });
+
+    const [params] = handleSlackAction.mock.calls[0] ?? [];
+    expect(params).toMatchObject({
+      action: "emojiList",
+      limit: 2,
+    });
+  });
 });