diff --git a/kyaml/setters2/add.go b/kyaml/setters2/add.go
index 4488e69ca..8b2946eed 100644
--- a/kyaml/setters2/add.go
+++ b/kyaml/setters2/add.go
@@ -4,7 +4,6 @@
 package setters2
 
 import (
-	"encoding/json"
 	"strings"
 
 	"github.com/go-openapi/spec"
@@ -136,19 +135,19 @@ func (sd SetterDefinition) AddToFile(path string) error {
 func (sd SetterDefinition) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 	key := SetterDefinitionPrefix + sd.Name
 
-	def, err := object.Pipe(yaml.LookupCreate(
-		yaml.MappingNode, openapi.SupplementaryOpenAPIFieldName, "definitions", key))
+	definitions, err := object.Pipe(yaml.LookupCreate(
+		yaml.MappingNode, openapi.SupplementaryOpenAPIFieldName, "definitions"))
 	if err != nil {
 		return nil, err
 	}
 
-	definitions, err := object.Pipe(yaml.Lookup(openapi.SupplementaryOpenAPIFieldName, "definitions"))
+	setterDef, err := definitions.Pipe(yaml.LookupCreate(yaml.MappingNode, key))
 	if err != nil {
 		return nil, err
 	}
 
 	if sd.Schema != "" {
-		schNode, err := ConvertJSONToYamlNode(sd.Schema)
+		schNode, err := yaml.ConvertJSONToYamlNode(sd.Schema)
 		if err != nil {
 			return nil, err
 		}
@@ -162,7 +161,7 @@ func (sd SetterDefinition) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 	}
 
 	if sd.Description != "" {
-		err = def.PipeE(yaml.FieldSetter{Name: "description", StringValue: sd.Description})
+		err = setterDef.PipeE(yaml.FieldSetter{Name: "description", StringValue: sd.Description})
 		if err != nil {
 			return nil, err
 		}
@@ -171,7 +170,7 @@ func (sd SetterDefinition) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 	}
 
 	if sd.Type != "" {
-		err = def.PipeE(yaml.FieldSetter{Name: "type", StringValue: sd.Type})
+		err = setterDef.PipeE(yaml.FieldSetter{Name: "type", StringValue: sd.Type})
 		if err != nil {
 			return nil, err
 		}
@@ -179,7 +178,7 @@ func (sd SetterDefinition) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 		sd.Type = ""
 	}
 
-	ext, err := def.Pipe(yaml.LookupCreate(yaml.MappingNode, K8sCliExtensionKey))
+	ext, err := setterDef.Pipe(yaml.LookupCreate(yaml.MappingNode, K8sCliExtensionKey))
 	if err != nil {
 		return nil, err
 	}
@@ -200,24 +199,6 @@ func (sd SetterDefinition) Filter(object *yaml.RNode) (*yaml.RNode, error) {
 	return object, nil
 }
 
-// ConvertJSONToYamlNode parses input json string and returns equivalent yaml node
-func ConvertJSONToYamlNode(jsonStr string) (*yaml.RNode, error) {
-	var body map[string]interface{}
-	err := json.Unmarshal([]byte(jsonStr), &body)
-	if err != nil {
-		return nil, err
-	}
-	yml, err := yaml.Marshal(body)
-	if err != nil {
-		return nil, err
-	}
-	ymlStr, err := yaml.Parse(string(yml))
-	if err != nil {
-		return nil, err
-	}
-	return ymlStr, nil
-}
-
 // SetterDefinition may be used to update a files OpenAPI definitions with a new substitution.
 type SubstitutionDefinition struct {
 	// Name is the name of the substitution to create or update
diff --git a/kyaml/yaml/types.go b/kyaml/yaml/types.go
index 3b3615265..d74cb8471 100644
--- a/kyaml/yaml/types.go
+++ b/kyaml/yaml/types.go
@@ -722,6 +722,24 @@ func (rn *RNode) UnmarshalJSON(b []byte) error {
 	return nil
 }
 
+// ConvertJSONToYamlNode parses input json string and returns equivalent yaml node
+func ConvertJSONToYamlNode(jsonStr string) (*RNode, error) {
+	var body map[string]interface{}
+	err := json.Unmarshal([]byte(jsonStr), &body)
+	if err != nil {
+		return nil, err
+	}
+	yml, err := yaml.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	node, err := Parse(string(yml))
+	if err != nil {
+		return nil, err
+	}
+	return node, nil
+}
+
 // checkKey returns true if all elems have the key
 func checkKey(key string, elems []*Node) bool {
 	count := 0
diff --git a/kyaml/yaml/types_test.go b/kyaml/yaml/types_test.go
index a68af4ae5..b963d5b28 100644
--- a/kyaml/yaml/types_test.go
+++ b/kyaml/yaml/types_test.go
@@ -146,3 +146,23 @@ hello: world
 		})
 	}
 }
+
+func TestConvertJSONToYamlNode(t *testing.T) {
+	inputJSON := `{"type": "string", "maxLength": 15, "enum": ["allowedValue1", "allowedValue2"]}`
+	expected := `enum:
+- allowedValue1
+- allowedValue2
+maxLength: 15
+type: string
+`
+
+	node, err := ConvertJSONToYamlNode(inputJSON)
+	if !assert.NoError(t, err) {
+		t.FailNow()
+	}
+	actual, err := node.String()
+	if !assert.NoError(t, err) {
+		t.FailNow()
+	}
+	assert.Equal(t, expected, actual)
+}