diff --git a/internal/schema.go b/internal/schema.go
index 0c6549f..f7128fe 100644
--- a/internal/schema.go
+++ b/internal/schema.go
@@ -12,7 +12,7 @@ func graphqlSchema() (graphql.Schema, error) {
 
 	queryFields := graphql.Fields{
 		"files": &graphql.Field{
-			Type: graphql.NewNonNull(graphql.NewList(graphqlFileType)),
+			Type: graphql.NewNonNull(graphql.NewList(graphql.NewNonNull(graphqlFileType))),
 			Args: graphql.FieldConfigArgument{
 				"path": &graphql.ArgumentConfig{
 					Type: graphql.NewNonNull(graphql.String),
@@ -30,7 +30,7 @@ func graphqlSchema() (graphql.Schema, error) {
 			},
 		},
 		"directorys": &graphql.Field{
-			Type: graphql.NewNonNull(graphql.NewList(graphqlDirType)),
+			Type: graphql.NewNonNull(graphql.NewList(graphql.NewNonNull(graphqlDirType))),
 			Args: graphql.FieldConfigArgument{
 				"path": &graphql.ArgumentConfig{
 					Type: graphql.NewNonNull(graphql.String),