diff --git a/core/coreiface/errors.go b/core/coreiface/errors.go
index 072275409..4ee3026ff 100644
--- a/core/coreiface/errors.go
+++ b/core/coreiface/errors.go
@@ -3,6 +3,6 @@ package iface
 import "errors"
 
 var (
-	ErrIsDir   = errors.New("object is a directory")
+	ErrIsDir   = errors.New("this dag node is a directory")
 	ErrOffline = errors.New("this action must be run in online mode, try running 'ipfs daemon' first")
 )