diff --git a/graph/utils_test.go b/graph/utils_test.go
index 0e39812..0b68bd7 100644
--- a/graph/utils_test.go
+++ b/graph/utils_test.go
@@ -1,7 +1,6 @@
 package graph_test
 
 import (
-	"fmt"
 	"regexp"
 	"testing"
 
@@ -20,10 +19,6 @@ func graphReq(expr string) *dsr.GetGraphRequest {
 	return parseRelation(expr).graphReq()
 }
 
-func invertedGraphReq(expr string) *dsr.GetGraphRequest {
-	return parseRelation(expr).invert().graphReq()
-}
-
 type relation struct {
 	ObjectType      model.ObjectName
 	ObjectID        model.ObjectID
@@ -89,16 +84,6 @@ func (r *relation) graphReq() *dsr.GetGraphRequest {
 	}
 }
 
-func (r *relation) invert() *relation {
-	return &relation{
-		ObjectType:  r.SubjectType,
-		ObjectID:    r.SubjectID,
-		Relation:    model.RelationName(fmt.Sprintf("%s_%s", r.ObjectType, r.Relation)),
-		SubjectType: r.ObjectType,
-		SubjectID:   r.ObjectID,
-	}
-}
-
 type RelationsReader []*relation
 
 func NewRelationsReader(rels ...string) RelationsReader {