diff --git a/backend/app/telegram/telegram.go b/backend/app/telegram/telegram.go
index 69e8083..cbe9b66 100644
--- a/backend/app/telegram/telegram.go
+++ b/backend/app/telegram/telegram.go
@@ -205,6 +205,13 @@ func handleMessage(bot *telego.Bot, message telego.Message) {
 			voice_type = "note"
 		case message.Document != nil:
 			voice_type = "document"
+
+			if !strings.HasPrefix(message.Document.MimeType, "audio/") {
+				log.Warnf("Ignoring non-audio document message in chat %s, mimetype: %s", chatIDString, message.Document.MimeType)
+
+				bot.SendMessage(tu.Message(chatID, "I don't support non-audio documents yet, stay tuned for updates.").WithMessageThreadID(message.MessageThreadID))
+				return
+			}
 		}
 		config.CONFIG.DataDogClient.Incr("telegram.voice_message_received", []string{"type:" + voice_type, "channel_type:" + message.Chat.Type}, 1)