diff --git a/Core/Controllers/Telegram.cs b/Core/Controllers/Telegram.cs
index ae477de..230ee59 100644
--- a/Core/Controllers/Telegram.cs
+++ b/Core/Controllers/Telegram.cs
@@ -34,7 +34,7 @@ namespace Kruzya.TelegramBot.Core.Controllers
         }
 
         [HttpPost]
-        public async IActionResult Index()
+        public async Task<IActionResult> Index()
         {
             if (_secretToken != null && !Request.Headers.ContainsKey(SecretTokenHeader))
             {