diff --git a/CommonCore b/CommonCore
index 8dbab5b..6879d3c 160000
--- a/CommonCore
+++ b/CommonCore
@@ -1 +1 @@
-Subproject commit 8dbab5b132d2fd84db202d691fd1f817f91579d6
+Subproject commit 6879d3cc2a08c19ca62aae32fbeb3c1e1813cea4
diff --git a/src/de/steamwar/command/SWCommand.java b/src/de/steamwar/command/SWCommand.java
index 242ef4d..36aaf64 100644
--- a/src/de/steamwar/command/SWCommand.java
+++ b/src/de/steamwar/command/SWCommand.java
@@ -104,6 +104,11 @@ public class SWCommand extends AbstractSWCommand<CommandSender> {
         defaultHelpMessages.add(message);
     }
 
+    @Override
+    protected void sendMessage(CommandSender sender, String message, Object[] args) {
+        ChatSender.of(sender).system(message, args);
+    }
+
     @Register(help = true)
     private void internalHelp(ProxiedPlayer p, String... args) {
         ChatSender chatSender = ChatSender.of(p);
diff --git a/src/de/steamwar/command/Validator.java b/src/de/steamwar/command/Validator.java
new file mode 100644
index 0000000..f7bca35
--- /dev/null
+++ b/src/de/steamwar/command/Validator.java
@@ -0,0 +1,25 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2020  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import net.md_5.bungee.api.CommandSender;
+
+public interface Validator<T> extends AbstractValidator<CommandSender, T> {
+}