diff --git a/controllers/cloudinit/cloudinit_common_test.go b/controllers/cloudinit/cloudinit_common_test.go
index 3e36b3d..25c9418 100644
--- a/controllers/cloudinit/cloudinit_common_test.go
+++ b/controllers/cloudinit/cloudinit_common_test.go
@@ -78,9 +78,9 @@ func TestCloudConfigInput(t *testing.T) {
 								g.Expect(err).NotTo(HaveOccurred())
 
 								if confinement == "classic" {
-									g.Expect(c.RunCommands).To(ContainElement(fmt.Sprintf(`/capi-scripts/00-install-microk8s.sh "--channel 1.25/%s --classic" ""`, risk)))
+									g.Expect(c.RunCommands).To(ContainElement(fmt.Sprintf(`/capi-scripts/00-install-microk8s.sh "--channel 1.25/%s --classic" false`, risk)))
 								} else {
-									g.Expect(c.RunCommands).To(ContainElement(fmt.Sprintf(`/capi-scripts/00-install-microk8s.sh "--channel 1.25-strict/%s" ""`, risk)))
+									g.Expect(c.RunCommands).To(ContainElement(fmt.Sprintf(`/capi-scripts/00-install-microk8s.sh "--channel 1.25-strict/%s" false`, risk)))
 								}
 
 								_, err = cloudinit.GenerateCloudConfig(c)
@@ -128,7 +128,7 @@ func TestCloudConfigInput(t *testing.T) {
 				c, err := tc.makeCloudConfig()
 				g.Expect(err).NotTo(HaveOccurred())
 
-				g.Expect(c.RunCommands).To(ContainElement(`/capi-scripts/00-install-microk8s.sh "--channel 1.25 --classic" "--disable-default-cni"`))
+				g.Expect(c.RunCommands).To(ContainElement(`/capi-scripts/00-install-microk8s.sh "--channel 1.25 --classic" true`))
 				_, err = cloudinit.GenerateCloudConfig(c)
 				g.Expect(err).NotTo(HaveOccurred())
 			})
diff --git a/controllers/cloudinit/controlplane_init.go b/controllers/cloudinit/controlplane_init.go
index ae1d7a6..461a6a2 100644
--- a/controllers/cloudinit/controlplane_init.go
+++ b/controllers/cloudinit/controlplane_init.go
@@ -120,9 +120,6 @@ func NewInitControlPlane(input *ControlPlaneInitInput) (*CloudConfig, error) {
 	}
 	installArgs := createInstallArgs(input.Confinement, input.RiskLevel, kubernetesVersion)
 
-	// extra arguments passed to 00-install-microk8s.sh
-	extraArgs := createExtraArgs(input.DisableDefaultCNI)
-
 	cloudConfig := NewBaseCloudConfig()
 	cloudConfig.WriteFiles = append(
 		cloudConfig.WriteFiles,
@@ -146,7 +143,7 @@ func NewInitControlPlane(input *ControlPlaneInitInput) (*CloudConfig, error) {
 		fmt.Sprintf("%s %q %q", scriptPath(snapstoreHTTPProxyScript), input.SnapstoreHTTPProxy, input.SnapstoreHTTPSProxy),
 		fmt.Sprintf("%s %q %q", scriptPath(snapstoreProxyScript), input.SnapstoreProxyDomain, input.SnapstoreProxyId),
 		scriptPath(disableHostServicesScript),
-		fmt.Sprintf("%s %q %q", scriptPath(installMicroK8sScript), installArgs, extraArgs),
+		fmt.Sprintf("%s %q %v", scriptPath(installMicroK8sScript), installArgs, input.DisableDefaultCNI),
 		fmt.Sprintf("%s %q %q %q", scriptPath(configureContainerdProxyScript), input.ContainerdHTTPProxy, input.ContainerdHTTPSProxy, input.ContainerdNoProxy),
 		scriptPath(configureKubeletScript),
 		scriptPath(waitAPIServerScript),
diff --git a/controllers/cloudinit/controlplane_init_test.go b/controllers/cloudinit/controlplane_init_test.go
index ec0e809..67535f9 100644
--- a/controllers/cloudinit/controlplane_init_test.go
+++ b/controllers/cloudinit/controlplane_init_test.go
@@ -48,7 +48,7 @@ func TestControlPlaneInit(t *testing.T) {
 			`/capi-scripts/00-configure-snapstore-http-proxy.sh "" ""`,
 			`/capi-scripts/00-configure-snapstore-proxy.sh "" ""`,
 			`/capi-scripts/00-disable-host-services.sh`,
-			`/capi-scripts/00-install-microk8s.sh "--channel 1.25 --classic" "--disable-default-cni"`,
+			`/capi-scripts/00-install-microk8s.sh "--channel 1.25 --classic" true`,
 			`/capi-scripts/10-configure-containerd-proxy.sh "" "" ""`,
 			`/capi-scripts/10-configure-kubelet.sh`,
 			`/capi-scripts/50-wait-apiserver.sh`,
diff --git a/controllers/cloudinit/controlplane_join.go b/controllers/cloudinit/controlplane_join.go
index 9feb066..3dcd0c6 100644
--- a/controllers/cloudinit/controlplane_join.go
+++ b/controllers/cloudinit/controlplane_join.go
@@ -102,9 +102,6 @@ func NewJoinControlPlane(input *ControlPlaneJoinInput) (*CloudConfig, error) {
 	}
 	installArgs := createInstallArgs(input.Confinement, input.RiskLevel, kubernetesVersion)
 
-	// extra arguments passed to 00-install-microk8s.sh
-	extraArgs := createExtraArgs(input.DisableDefaultCNI)
-
 	cloudConfig := NewBaseCloudConfig()
 	cloudConfig.WriteFiles = append(cloudConfig.WriteFiles, input.ExtraWriteFiles...)
 	if args := input.ExtraKubeletArgs; len(args) > 0 {
@@ -128,7 +125,7 @@ func NewJoinControlPlane(input *ControlPlaneJoinInput) (*CloudConfig, error) {
 		fmt.Sprintf("%s %q %q", scriptPath(snapstoreHTTPProxyScript), input.SnapstoreHTTPProxy, input.SnapstoreHTTPSProxy),
 		fmt.Sprintf("%s %q %q", scriptPath(snapstoreProxyScript), input.SnapstoreProxyDomain, input.SnapstoreProxyId),
 		scriptPath(disableHostServicesScript),
-		fmt.Sprintf("%s %q %q", scriptPath(installMicroK8sScript), installArgs, extraArgs),
+		fmt.Sprintf("%s %q %v", scriptPath(installMicroK8sScript), installArgs, input.DisableDefaultCNI),
 		fmt.Sprintf("%s %q %q %q", scriptPath(configureContainerdProxyScript), input.ContainerdHTTPProxy, input.ContainerdHTTPSProxy, input.ContainerdNoProxy),
 		scriptPath(configureKubeletScript),
 		scriptPath(waitAPIServerScript),
diff --git a/controllers/cloudinit/controlplane_join_test.go b/controllers/cloudinit/controlplane_join_test.go
index 4afe9aa..21ad7d5 100644
--- a/controllers/cloudinit/controlplane_join_test.go
+++ b/controllers/cloudinit/controlplane_join_test.go
@@ -46,7 +46,7 @@ func TestControlPlaneJoin(t *testing.T) {
 			`/capi-scripts/00-configure-snapstore-http-proxy.sh "" ""`,
 			`/capi-scripts/00-configure-snapstore-proxy.sh "" ""`,
 			`/capi-scripts/00-disable-host-services.sh`,
-			`/capi-scripts/00-install-microk8s.sh "--channel 1.25 --classic" "--disable-default-cni"`,
+			`/capi-scripts/00-install-microk8s.sh "--channel 1.25 --classic" true`,
 			`/capi-scripts/10-configure-containerd-proxy.sh "" "" ""`,
 			`/capi-scripts/10-configure-kubelet.sh`,
 			`/capi-scripts/50-wait-apiserver.sh`,
diff --git a/controllers/cloudinit/scripts/00-install-microk8s.sh b/controllers/cloudinit/scripts/00-install-microk8s.sh
old mode 100644
new mode 100755
index 82fb99d..1061fff
--- a/controllers/cloudinit/scripts/00-install-microk8s.sh
+++ b/controllers/cloudinit/scripts/00-install-microk8s.sh
@@ -1,19 +1,15 @@
 #!/bin/bash -xe
 
 # Usage:
-#   $0 $microk8s_snap_args [--disable-default-cni]
+#   $0 $microk8s_snap_args $disable_default_cni
+#
+# Arguments:
+#   $microk8s_snap_args   Arguments to pass to snap install
+#   $disable_default_cni  Boolean flag to disable the default CNI
 #
 # Assumptions:
 #   - snapd is installed
 
-DISABLE_DEFAULT_CNI=false
-
-for arg in "$@"; do
-  if [ "$arg" == "--disable-default-cni" ]; then
-    DISABLE_DEFAULT_CNI=true
-  fi
-done
-
 if snap list microk8s; then
   echo "MicroK8s is already installed, will not install"
   exit 0
@@ -24,6 +20,6 @@ while ! snap install microk8s ${1}; do
   sleep 5
 done
 
-if [ "$DISABLE_DEFAULT_CNI" == "true" ]; then
+if [ "${2}" == "true" ]; then
   mv /var/snap/microk8s/current/args/cni-network/cni.yaml /var/snap/microk8s/current/args/cni-network/cni.yaml.old
-fi
\ No newline at end of file
+fi
diff --git a/controllers/cloudinit/utils.go b/controllers/cloudinit/utils.go
index 5ea1869..3a79f7e 100644
--- a/controllers/cloudinit/utils.go
+++ b/controllers/cloudinit/utils.go
@@ -43,15 +43,6 @@ func createInstallArgs(confinement string, riskLevel string, kubernetesVersion *
 	return installArgs
 }
 
-func createExtraArgs(disableDefaultCNI bool) string {
-	var extraArgs string
-	if disableDefaultCNI {
-		extraArgs = "--disable-default-cni"
-	}
-
-	return extraArgs
-}
-
 func WriteFilesFromAPI(files []bootstrapclusterxk8siov1beta1.CloudInitWriteFile) []File {
 	if len(files) == 0 {
 		return nil
diff --git a/controllers/cloudinit/worker_join.go b/controllers/cloudinit/worker_join.go
index ead270a..515abb3 100644
--- a/controllers/cloudinit/worker_join.go
+++ b/controllers/cloudinit/worker_join.go
@@ -112,7 +112,7 @@ func NewJoinWorker(input *WorkerInput) (*CloudConfig, error) {
 		fmt.Sprintf("%s %q %q", scriptPath(snapstoreHTTPProxyScript), input.SnapstoreHTTPProxy, input.SnapstoreHTTPSProxy),
 		fmt.Sprintf("%s %q %q", scriptPath(snapstoreProxyScript), input.SnapstoreProxyDomain, input.SnapstoreProxyId),
 		scriptPath(disableHostServicesScript),
-		fmt.Sprintf("%s %q %q", scriptPath(installMicroK8sScript), installArgs, ""), // no extra args
+		fmt.Sprintf("%s %q %v", scriptPath(installMicroK8sScript), installArgs, false),
 		fmt.Sprintf("%s %q %q %q", scriptPath(configureContainerdProxyScript), input.ContainerdHTTPProxy, input.ContainerdHTTPSProxy, input.ContainerdNoProxy),
 		scriptPath(configureKubeletScript),
 		scriptPath(waitAPIServerScript),
diff --git a/controllers/cloudinit/worker_join_test.go b/controllers/cloudinit/worker_join_test.go
index 30947e4..43a2450 100644
--- a/controllers/cloudinit/worker_join_test.go
+++ b/controllers/cloudinit/worker_join_test.go
@@ -42,7 +42,7 @@ func TestWorkerJoin(t *testing.T) {
 			`/capi-scripts/00-configure-snapstore-http-proxy.sh "" ""`,
 			`/capi-scripts/00-configure-snapstore-proxy.sh "" ""`,
 			`/capi-scripts/00-disable-host-services.sh`,
-			`/capi-scripts/00-install-microk8s.sh "--channel 1.24 --classic" ""`,
+			`/capi-scripts/00-install-microk8s.sh "--channel 1.24 --classic" false`,
 			`/capi-scripts/10-configure-containerd-proxy.sh "" "" ""`,
 			`/capi-scripts/10-configure-kubelet.sh`,
 			`/capi-scripts/50-wait-apiserver.sh`,