diff --git a/src/main/java/de/gnmyt/autoresponder/commands/ResponderChatCommand.java b/src/main/java/de/gnmyt/autoresponder/commands/ResponderChatCommand.java
index bbd979a..c6273d0 100644
--- a/src/main/java/de/gnmyt/autoresponder/commands/ResponderChatCommand.java
+++ b/src/main/java/de/gnmyt/autoresponder/commands/ResponderChatCommand.java
@@ -1,6 +1,9 @@
 package de.gnmyt.autoresponder.commands;
 
-public abstract class ResponderChatCommand {
+import de.gnmyt.autoresponder.entities.GroupCommandData;
 
+public abstract class ResponderChatCommand extends ResponderCommand {
+
+    public abstract void execute(GroupCommandData command, Arguments args, AnswerController controller);
 
 }