diff --git a/TelegramBotBase/Form/PromptDialog.cs b/TelegramBotBase/Form/PromptDialog.cs
index a2d4c56..1d2d5f4 100644
--- a/TelegramBotBase/Form/PromptDialog.cs
+++ b/TelegramBotBase/Form/PromptDialog.cs
@@ -82,7 +82,7 @@ public class PromptDialog : ModalDialog
             {
                 var bf = new ButtonForm();
                 bf.AddButtonRow(new ButtonBase(BackLabel, "back"));
-                await Device.Send(Message, (ReplyMarkupBase)bf);
+                await Device.Send(Message, (IReplyMarkup)bf);
                 return;
             }
 
diff --git a/TelegramBotBase/Sessions/DeviceSession.cs b/TelegramBotBase/Sessions/DeviceSession.cs
index f2b49d2..05e9728 100644
--- a/TelegramBotBase/Sessions/DeviceSession.cs
+++ b/TelegramBotBase/Sessions/DeviceSession.cs
@@ -312,7 +312,7 @@ public class DeviceSession : IDeviceSession
     /// <param name="replyTo"></param>
     /// <param name="disableNotification"></param>
     /// <returns></returns>
-    public async Task<Message> Send(string text, ReplyMarkupBase markup, int replyTo = 0,
+    public async Task<Message> Send(string text, IReplyMarkup markup, int replyTo = 0,
                                     bool disableNotification = false, ParseMode parseMode = ParseMode.Markdown,
                                     bool markdownV2AutoEscape = true)
     {