diff --git a/packages/web-api/src/types/response/MigrationExchangeResponse.ts b/packages/web-api/src/types/response/MigrationExchangeResponse.ts
index 4fcf80670..0add511be 100644
--- a/packages/web-api/src/types/response/MigrationExchangeResponse.ts
+++ b/packages/web-api/src/types/response/MigrationExchangeResponse.ts
@@ -17,9 +17,6 @@ export type MigrationExchangeResponse = WebAPICallResult & {
   ok?:               boolean;
   provided?:         string;
   team_id?:          string;
-  user_id_map?:      UseridMap;
+  user_id_map?:      { [key: string]: string };
   warning?:          string;
 };
-
-export interface UseridMap {
-}