diff --git a/src/renderer/hooks/useTeamMessagesRead.ts b/src/renderer/hooks/useTeamMessagesRead.ts
index df7e016a..b0f4eaf9 100644
--- a/src/renderer/hooks/useTeamMessagesRead.ts
+++ b/src/renderer/hooks/useTeamMessagesRead.ts
@@ -13,7 +13,7 @@ export function useTeamMessagesRead(teamName: string): {
   const readSet = useMemo(
     () => {
       if (version < 0) return new Set<string>();
-      return teamName ? getReadSetStorage(teamName) : new Set();
+      return teamName ? getReadSetStorage(teamName) : new Set<string>();
     },
     [teamName, version]
   );