diff --git a/main.go b/main.go
index ec136c8..31f7a6f 100644
--- a/main.go
+++ b/main.go
@@ -16,8 +16,8 @@ import (
 type MsgDirection string
 
 const (
-	Incoming string = `incoming`
-	Outgoing string = `outgoing`
+	Incoming MsgDirection = `incoming`
+	Outgoing MsgDirection = `outgoing`
 )
 
 type ChatWarsMessage struct {