diff --git a/node.go b/node.go
index a58488c..fe90df3 100644
--- a/node.go
+++ b/node.go
@@ -46,7 +46,7 @@ type Node struct {
 
 // RelationshipOneNode is used to represent a generic has one JSON API relation
 type RelationshipOneNode struct {
-	Data  *Node  `json:"data"`
+	Data  *Node  `json:"data,omitempty"`
 	Links *Links `json:"links,omitempty"`
 	Meta  *Meta  `json:"meta,omitempty"`
 }
@@ -54,7 +54,7 @@ type RelationshipOneNode struct {
 // RelationshipManyNode is used to represent a generic has many JSON API
 // relation
 type RelationshipManyNode struct {
-	Data  []*Node `json:"data"`
+	Data  []*Node `json:"data,omitempty"`
 	Links *Links  `json:"links,omitempty"`
 	Meta  *Meta   `json:"meta,omitempty"`
 }
diff --git a/response_test.go b/response_test.go
index 5b42595..2bf7e1e 100644
--- a/response_test.go
+++ b/response_test.go
@@ -116,43 +116,21 @@ func TestWithoutOmitsEmptyAnnotationOnRelation(t *testing.T) {
 	}
 	relationships := jsonData["data"].(map[string]interface{})["relationships"].(map[string]interface{})
 
-	// Verifiy the "posts" relation was an empty array
-	posts, ok := relationships["posts"]
+	// Verify the "posts" relation was an empty array
+	_, ok := relationships["posts"]
 	if !ok {
 		t.Fatal("Was expecting the data.relationships.posts key/value to have been present")
 	}
-	postsMap, ok := posts.(map[string]interface{})
-	if !ok {
-		t.Fatal("data.relationships.posts was not a map")
-	}
-	postsData, ok := postsMap["data"]
-	if !ok {
-		t.Fatal("Was expecting the data.relationships.posts.data key/value to have been present")
-	}
-	postsDataSlice, ok := postsData.([]interface{})
-	if !ok {
-		t.Fatal("data.relationships.posts.data was not a slice []")
-	}
-	if len(postsDataSlice) != 0 {
-		t.Fatal("Was expecting the data.relationships.posts.data value to have been an empty array []")
-	}
 
-	// Verifiy the "current_post" was a null
+	// Verify the "current_post" was a null
 	currentPost, postExists := relationships["current_post"]
 	if !postExists {
 		t.Fatal("Was expecting the data.relationships.current_post key/value to have NOT been omitted")
 	}
-	currentPostMap, ok := currentPost.(map[string]interface{})
+	_, ok = currentPost.(map[string]interface{})
 	if !ok {
 		t.Fatal("data.relationships.current_post was not a map")
 	}
-	currentPostData, ok := currentPostMap["data"]
-	if !ok {
-		t.Fatal("Was expecting the data.relationships.current_post.data key/value to have been present")
-	}
-	if currentPostData != nil {
-		t.Fatal("Was expecting the data.relationships.current_post.data value to have been nil/null")
-	}
 }
 
 func TestWithOmitsEmptyAnnotationOnRelation(t *testing.T) {