diff --git a/extensions/msteams/src/errors.ts b/extensions/msteams/src/errors.ts
index 62449e126f9..c558690521d 100644
--- a/extensions/msteams/src/errors.ts
+++ b/extensions/msteams/src/errors.ts
@@ -1,3 +1,5 @@
+import { isRecord } from "./attachments/shared.js";
+
 export function formatUnknownError(err: unknown): string {
   if (err instanceof Error) {
     return err.message;
@@ -27,10 +29,6 @@ export function formatUnknownError(err: unknown): string {
   }
 }
 
-function isRecord(value: unknown): value is Record<string, unknown> {
-  return typeof value === "object" && value !== null && !Array.isArray(value);
-}
-
 function extractStatusCode(err: unknown): number | null {
   if (!isRecord(err)) {
     return null;
diff --git a/extensions/msteams/src/polls.ts b/extensions/msteams/src/polls.ts
index 7d00e96fad5..1646992f0f9 100644
--- a/extensions/msteams/src/polls.ts
+++ b/extensions/msteams/src/polls.ts
@@ -1,4 +1,5 @@
 import crypto from "node:crypto";
+import { isRecord } from "./attachments/shared.js";
 import { resolveMSTeamsStorePath } from "./storage.js";
 import { readJsonFile, withFileLock, writeJsonFile } from "./store-fs.js";
 
@@ -46,9 +47,6 @@ type PollStoreData = {
 const STORE_FILENAME = "msteams-polls.json";
 const MAX_POLLS = 1000;
 const POLL_TTL_MS = 30 * 24 * 60 * 60 * 1000;
-function isRecord(value: unknown): value is Record<string, unknown> {
-  return Boolean(value) && typeof value === "object" && !Array.isArray(value);
-}
 
 function normalizeChoiceValue(value: unknown): string | null {
   if (typeof value === "string") {