diff --git a/controllers/suite_test.go b/controllers/suite_test.go
index f814299..07cc06c 100644
--- a/controllers/suite_test.go
+++ b/controllers/suite_test.go
@@ -101,6 +101,9 @@ var _ = BeforeSuite(func(done Done) {
 }, 60)
 
 var _ = AfterSuite(func() {
+	// Remove remnent resources
+	util.DeleteAllSlackChannels(ns)
+
 	By("tearing down the test environment")
 	err := testEnv.Stop()
 	Expect(err).ToNot(HaveOccurred())
diff --git a/controllers/util/testUtil.go b/controllers/util/testUtil.go
index 1e1babf..55e9f96 100644
--- a/controllers/util/testUtil.go
+++ b/controllers/util/testUtil.go
@@ -2,11 +2,13 @@ package util
 
 import (
 	"context"
+	"fmt"
 	"math/rand"
 	"time"
 
-	ginko "github.com/onsi/ginkgo"
+	ginkgo "github.com/onsi/ginkgo"
 	slackv1alpha1 "github.com/stakater/slack-operator/api/v1alpha1"
+	mockdata "github.com/stakater/slack-operator/pkg/slack/mock"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -35,14 +37,14 @@ func (t *TestUtil) CreateChannel(name string, isPrivate bool, topic string, desc
 	err := t.k8sClient.Create(t.ctx, channelObject)
 
 	if err != nil {
-		ginko.Fail(err.Error())
+		ginkgo.Fail(err.Error())
 	}
 
 	req := reconcile.Request{NamespacedName: types.NamespacedName{Name: name, Namespace: namespace}}
 
 	_, err = t.r.Reconcile(req)
 	if err != nil {
-		ginko.Fail(err.Error())
+		ginkgo.Fail(err.Error())
 	}
 
 	return channelObject
@@ -54,7 +56,7 @@ func (t *TestUtil) GetChannel(name string, namespace string) *slackv1alpha1.Chan
 	err := t.k8sClient.Get(t.ctx, types.NamespacedName{Name: name, Namespace: namespace}, channelObject)
 
 	if err != nil {
-		ginko.Fail(err.Error())
+		ginkgo.Fail(err.Error())
 	}
 
 	return channelObject
@@ -66,20 +68,20 @@ func (t *TestUtil) DeleteChannel(name string, namespace string) {
 	err := t.k8sClient.Get(t.ctx, types.NamespacedName{Name: name, Namespace: namespace}, channelObject)
 
 	if err != nil {
-		ginko.Fail(err.Error())
+		ginkgo.Fail(err.Error())
 	}
 
 	err = t.k8sClient.Delete(t.ctx, channelObject)
 
 	if err != nil {
-		ginko.Fail(err.Error())
+		ginkgo.Fail(err.Error())
 	}
 
 	req := reconcile.Request{NamespacedName: types.NamespacedName{Name: name, Namespace: namespace}}
 
 	_, err = t.r.Reconcile(req)
 	if err != nil {
-		ginko.Fail(err.Error())
+		ginkgo.Fail(err.Error())
 	}
 }
 
@@ -92,6 +94,38 @@ func (t *TestUtil) TryDeleteChannel(name string, namespace string) {
 	_, _ = t.r.Reconcile(req)
 }
 
+// DeleteAllSlackChannels delete all the slack channels in the namespace
+func (t *TestUtil) DeleteAllSlackChannels(namespace string) {
+	// Specify namespace in list Options
+	listOptions := &client.ListOptions{Namespace: namespace}
+
+	// List channels in a specified namespace
+	channelList := &slackv1alpha1.ChannelList{}
+	err := t.k8sClient.List(context.TODO(), channelList, listOptions)
+	if err != nil {
+		ginkgo.Fail(err.Error())
+	}
+
+	for _, channel := range channelList.Items {
+		channel.Finalizers = []string{}
+
+		err := t.k8sClient.Update(t.ctx, &channel)
+		if err != nil {
+			if err.Error() == fmt.Sprintf(mockdata.ChannelObjectModifiedError, channel.Name) {
+				currentChannel := t.GetChannel(channel.Name, namespace)
+				currentChannel.Finalizers = []string{}
+				if err != nil {
+					ginkgo.Fail(err.Error())
+				}
+			} else {
+				ginkgo.Fail(err.Error())
+			}
+		}
+
+		t.TryDeleteChannel(channel.Name, namespace)
+	}
+}
+
 // CreateSlackChannelObject creates a slack channel custom resource object
 func (t *TestUtil) CreateSlackChannelObject(name string, isPrivate bool, topic string, description string, users []string, namespace string) *slackv1alpha1.Channel {
 	return &slackv1alpha1.Channel{
diff --git a/pkg/slack/mock/data.go b/pkg/slack/mock/data.go
index 63dc04d..6186da5 100644
--- a/pkg/slack/mock/data.go
+++ b/pkg/slack/mock/data.go
@@ -7,6 +7,8 @@ import (
 	"github.com/slack-go/slack"
 )
 
+var ChannelObjectModifiedError = "Operation cannot be fulfilled on channels.slack.stakater.com \"%s\": the object has been modified; please apply your changes to the latest version and try again"
+
 var ConversationName = "bat-channel"
 var NameTakenConversationName = "name-taken"
 var PublicConversationID = "C0EAQDV4Z"