diff --git a/lib/istio/addon/components/modal-delete-istio/component.js b/lib/istio/addon/components/modal-delete-istio/component.js
index cbb8a627f..b918540e2 100644
--- a/lib/istio/addon/components/modal-delete-istio/component.js
+++ b/lib/istio/addon/components/modal-delete-istio/component.js
@@ -34,11 +34,12 @@ export default Component.extend(ModalBase, {
       const {
         istioApp, onlyIstio, cluster
       } = this
+      const { systemProject } = cluster;
+      const istioSystemNamespace       = ( systemProject.namespaces || []).findBy('id', 'istio-system');
 
       set(this, 'saving', true)
 
-      const disableIstio = istioApp.delete()
-      const promises = [disableIstio]
+      const promises = [istioApp.delete(), istioSystemNamespace.delete()];
 
       if (!onlyIstio) {
         promises.pushObject(cluster.doAction('disableMonitoring'))
diff --git a/translations/en-us.yaml b/translations/en-us.yaml
index 27ab4c2ce..2661cc40e 100644
--- a/translations/en-us.yaml
+++ b/translations/en-us.yaml
@@ -7392,8 +7392,8 @@ machineTemplatesPage:
 modalDeleteIstio:
   title: 'Are you sure you want to disable:'
   onlyIstio:
-    true: Istio Only
-    false: Both Istio and Monitoring
+    true: Istio and remove Istio system namespace
+    false: Istio, Monitoring and remove Istio system namespace
   disable: Disable
   disabling: Disabling