diff --git a/controllers/spec/sink.go b/controllers/spec/sink.go
index 237b00dd..9460a46f 100644
--- a/controllers/spec/sink.go
+++ b/controllers/spec/sink.go
@@ -21,15 +21,14 @@ import (
 	"context"
 	"regexp"
 
-	"github.com/streamnative/function-mesh/utils"
-	"google.golang.org/protobuf/encoding
+	corev1 "k8s.io/api/core/v1"
+
 	"github.com/streamnative/function-mesh/utils"
 	"google.golang.org/protobuf/encoding/protojson"
 	appsv1 "k8s.io/api/apps/v1"
 	autov2 "k8s.io/api/autoscaling/v2"
 	v1 "k8s.io/api/batch/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"regexp"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	"github.com/streamnative/function-mesh/api/compute/v1alpha1"