diff --git a/core/builder.go b/core/builder.go
index 9a9d8066d..fd64349d1 100644
--- a/core/builder.go
+++ b/core/builder.go
@@ -115,6 +115,7 @@ func defaultRepo(dstore repo.Datastore) (repo.Repo, error) {
 	}, nil
 }
 
+// NewNode constructs and returns an IpfsNode using the given cfg.
 func NewNode(ctx context.Context, cfg *BuildCfg) (*IpfsNode, error) {
 	if cfg == nil {
 		cfg = new(BuildCfg)