diff --git a/errors.go b/errors.go
index 5d0af69..d91ed1d 100644
--- a/errors.go
+++ b/errors.go
@@ -3,5 +3,7 @@ package l1
 import "fmt"
 
 var (
+	// ErrNoTarget is the error used when no target has been set
+	// in the Runner.
 	ErrNoTarget = fmt.Errorf("no target has been set")
 )