diff --git a/cmix/identity/tracker.go b/cmix/identity/tracker.go
index be3b3bc882c947f27c901ae154fdfde1949b480f..0ce29846e61cf7ec124490023415d94321ff84da 100644
--- a/cmix/identity/tracker.go
+++ b/cmix/identity/tracker.go
@@ -44,6 +44,8 @@ const (
 	// on receptionID.Identity.
 	DefaultExtraChecks = 5
 
+	// NetworkRetention is how long messages are
+	// retained on the network
 	NetworkRetention = 500 * time.Hour
 )