diff --git a/src/event/mod.rs b/src/event/mod.rs
index da6914d..c850baf 100644
--- a/src/event/mod.rs
+++ b/src/event/mod.rs
@@ -1,7 +1,11 @@
 use {Message, Channel, User};
 
 pub enum Event {
-    Message { message: Message },
-    Join { channel: Channel },
-    Quit { channel: Channel }
+    Message { message: Message },     // A user sends a message
+
+    SelfJoin { channel: Channel },    // We join a channel
+    SelfQuit { channel: Channel },    // We quit a channel
+
+    UserJoin { channel: Channel, user: User }, // A user joins a channel
+    UserQuit { channel: Channel, user: User }  // A user quits a channel
 }