diff --git a/main.go b/main.go
index 324b9fe..4217041 100644
--- a/main.go
+++ b/main.go
@@ -40,8 +40,8 @@ type Config struct {
 type MsgDirection string
 
 const (
-	Incoming string = `incoming`
-	Outgoing string = `outgoing`
+	Incoming MsgDirection = `incoming`
+	Outgoing MsgDirection = `outgoing`
 )
 
 type ChatWarsMessage struct {