Chat stops working after I use ClientChatReceivedEvent

So what i'm trying to do is whenever a certain word is being typed in chat by anyone, it would message the player something.

But whenever I use this event the chat stops working, and I cannot chat anymore not even type a command + I cannot see what other players type.

@SubscribeEvent
public void onChat(final ClientChatReceivedEvent event) throws IOException {
final String m = event.message.getUnformattedText();
if (m.equals("wtflol")) {
Minecraft.getMinecraft().thePlayer.addChatComponentMessage(new ChatComponentText("test"));
}
}
}