diff --git a/src/main/kotlin/me/kuku/telegram/context/Async.kt b/src/main/kotlin/me/kuku/telegram/context/Async.kt
index f93f1b5..c4844a3 100644
--- a/src/main/kotlin/me/kuku/telegram/context/Async.kt
+++ b/src/main/kotlin/me/kuku/telegram/context/Async.kt
@@ -11,7 +11,11 @@ suspend fun <T : BaseRequest<T, R>, R : BaseResponse> TelegramBot.asyncExecute(r
     val completableDeferred = CompletableDeferred<R>()
     this.execute(request, object: Callback<T, R> {
         override fun onResponse(request: T, response: R) {
-            completableDeferred.complete(response)
+            if (response.isOk) {
+                completableDeferred.complete(response)
+            } else {
+                completableDeferred.completeExceptionally(IllegalStateException(response.description()))
+            }
         }
 
         override fun onFailure(request: T, e: IOException) {