diff --git a/main.go b/main.go
index 282cffd..61982f9 100644
--- a/main.go
+++ b/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"flag"
 	"fmt"
+	"github.com/xeipuuv/gojsonschema"
 	"github.com/yannh/kubeconform/pkg/output"
 	"io"
 	"io/ioutil"
@@ -40,7 +41,7 @@ func validateFile(f io.Reader, regs []registry.Registry, k8sVersion string, skip
 		return []validationResult{{err: nil, skipped: true}}
 	}
 
-	var schema []byte
+	var schema *gojsonschema.Schema
 	for _, reg := range regs {
 		downloadSchema := cache.WithCache(reg.DownloadSchema)
 		schema, err = downloadSchema(sig.Kind, sig.Version, k8sVersion)
@@ -70,8 +71,6 @@ func (i *arrayFiles) Set(value string) error {
 	return nil
 }
 
-
-
 func realMain() int {
 	var files, dirs, schemas arrayFiles
 	var skipKinds, k8sVersion, outputFormat string
@@ -98,14 +97,14 @@ func realMain() int {
 		log.Fatalf("-output must be text or json")
 	}
 
+	splitKinds := strings.Split(skipKinds, ",")
+	kinds := map[string]bool {}
+	for _, kind := range splitKinds {
+		kinds[kind] = true
+	}
 	filter := func(signature resource.Signature) bool {
-		kinds := strings.Split(skipKinds, ",")
-		for _, kind := range kinds {
-			if signature.Kind == kind {
-				return true
-			}
-		}
-		return false
+		 isSkipKind, ok :=  kinds[signature.Kind]
+		 return ok && isSkipKind
 	}
 
 	registries := []registry.Registry{}
diff --git a/pkg/cache/main.go b/pkg/cache/main.go
index 9bb8cae..5416a50 100644
--- a/pkg/cache/main.go
+++ b/pkg/cache/main.go
@@ -2,18 +2,19 @@ package cache
 
 import (
 	"fmt"
+	"github.com/xeipuuv/gojsonschema"
 	"sync"
 )
 
 var mu sync.Mutex
-var schemas map[string][]byte
+var schemas map[string]*gojsonschema.Schema
 
 func init () {
-	schemas = map[string][]byte {}
+	schemas = map[string]*gojsonschema.Schema{}
 }
 
-func WithCache(downloadSchema func(string, string, string) ([]byte, error)) (func (string, string, string) ([]byte, error)) {
-	return func(resourceKind, resourceAPIVersion, k8sVersion string) ([]byte, error) {
+func WithCache(downloadSchema func(string, string, string) (*gojsonschema.Schema, error)) (func (string, string, string) (*gojsonschema.Schema, error)) {
+	return func(resourceKind, resourceAPIVersion, k8sVersion string) (*gojsonschema.Schema, error) {
 		cacheKey := fmt.Sprintf("%s-%s-%s", resourceKind, resourceAPIVersion, k8sVersion)
 		mu.Lock()
 		cachedSchema, ok := schemas[cacheKey];
@@ -23,14 +24,11 @@ func WithCache(downloadSchema func(string, string, string) ([]byte, error)) (fun
 		}
 
 		schema, err := downloadSchema(resourceKind, resourceAPIVersion, k8sVersion)
-		if err != nil {
-			return schema, err
-		}
 
 		mu.Lock()
 		schemas[cacheKey] = schema
 		mu.Unlock()
 
-		return schema, nil
+		return schema, err
 	}
 }
\ No newline at end of file
diff --git a/pkg/registry/registry.go b/pkg/registry/registry.go
index ad75a5f..85cefa0 100644
--- a/pkg/registry/registry.go
+++ b/pkg/registry/registry.go
@@ -1,9 +1,11 @@
 package registry
 
+import "github.com/xeipuuv/gojsonschema"
+
 type Manifest struct {
 	Kind, Version string
 }
 
 type Registry interface {
-	DownloadSchema(resourceKind, resourceAPIVersion, k8sVersion string) ([]byte, error)
+	DownloadSchema(resourceKind, resourceAPIVersion, k8sVersion string) (*gojsonschema.Schema, error)
 }
diff --git a/pkg/validator/main.go b/pkg/validator/main.go
index c506f8f..d998b47 100644
--- a/pkg/validator/main.go
+++ b/pkg/validator/main.go
@@ -26,15 +26,13 @@ func (f ValidFormat) IsFormat(input interface{}) bool {
 // 	gojsonschema.FormatCheckers.Add("int-or-string", ValidFormat{})
 // }
 
-func Validate(rawResource []byte, rawSchema []byte) error {
-	schemaLoader := gojsonschema.NewBytesLoader(rawSchema)
-	schema, err := gojsonschema.NewSchema(schemaLoader)
-	if err != nil {
-		return err
+func Validate(rawResource []byte, schema *gojsonschema.Schema) error {
+	if schema == nil {
+		return nil
 	}
 
 	var resource map[string]interface{}
-	if err = yaml.Unmarshal(rawResource, &resource); err != nil {
+	if err := yaml.Unmarshal(rawResource, &resource); err != nil {
 		return fmt.Errorf("error unmarshalling resource: %s", err)
 	}
 	resourceLoader := gojsonschema.NewGoLoader(resource)