diff --git a/main.go b/main.go
index 52188f6..963c6e6 100644
--- a/main.go
+++ b/main.go
@@ -92,7 +92,9 @@ func handleMsg(ctx context.Context, entities tg.Entities, u *tg.UpdateNewMessage
 			return nil
 		default:
 			fmt.Println("  (invalid cmd)")
-			_, _ = telegramSender.Reply(entities, u).Text(ctx, errorStr+": invalid command")
+			if fromGroup != nil {
+				_, _ = telegramSender.Reply(entities, u).Text(ctx, errorStr+": invalid command")
+			}
 			return nil
 		}
 	}