diff --git a/src/pages/StoryDetailPage.tsx b/src/pages/StoryDetailPage.tsx
index 1fba944..088db19 100644
--- a/src/pages/StoryDetailPage.tsx
+++ b/src/pages/StoryDetailPage.tsx
@@ -99,7 +99,7 @@ export default function StoryDetailPage() {
   };
 
   // Примерный подсчёт токенов (1 токен ≈ 3 символа для русского текста)
-  const estimateTokens = (messages: typeof session?.messages) => {
+  const estimateTokens = (messages: GameSession["messages"] | undefined) => {
     if (!messages || messages.length === 0) return 0;
     const totalChars = messages.reduce(
       (sum, msg) => sum + msg.content.length,