diff --git a/editions.go b/editions.go
index 9fdb711..0be0815 100644
--- a/editions.go
+++ b/editions.go
@@ -58,9 +58,9 @@ func (b *Book) Load() {
 }
 
 // KeyAuthors returns array of all authors keys
-func (b *Book) KeyAuthors() (keys []string, err error) {
+func (b *Book) KeyAuthors() ([]string, error) {
 	if len(b.keyAuthors) > 0 {
-		return b.keyAuthors, err
+		return b.keyAuthors, nil
 	}
 	for _, child := range b.S("authors").Children() {
 		for _, v := range child.ChildrenMap() {
@@ -71,7 +71,7 @@ func (b *Book) KeyAuthors() (keys []string, err error) {
 	if len(b.keyAuthors) == 0 {
 		return b.keyAuthors, fmt.Errorf("Could not find any authors")
 	}
-	return
+	return b.keyAuthors, nil
 }
 
 //TODO: add this after dealing with authors API
diff --git a/subjects_test.go b/subjects_test.go
index 73f487c..6330806 100644
--- a/subjects_test.go
+++ b/subjects_test.go
@@ -5,6 +5,11 @@ import (
 )
 
 func TestGetSubject(t *testing.T) {
+	//sub, err := gol.GetSubject("computer science")
+	//if err != nil {
+	//fmt.Println(err)
+	//}
+	//fmt.Println(sub)
 }
 
 func TestGetSubjectDetails(t *testing.T) {