diff --git a/src/libei.h b/src/libei.h
index 5efb113..4ae4ac3 100644
--- a/src/libei.h
+++ b/src/libei.h
@@ -63,6 +63,10 @@ enum ei_event_type {
 	 * return value for ei_next_event_type().
 	 */
 	EI_EVENT_NONE = 0,
+	/**
+	 * Message sent by the server immediately on connect.
+	 */
+	EI_EVENT_HELLO,
 	/**
 	 * The server has approved the connection to this client.
 	 */