diff --git a/api/v1alpha1/istio_types.go b/api/v1alpha1/istio_types.go
index fc23a3f37..fee392773 100644
--- a/api/v1alpha1/istio_types.go
+++ b/api/v1alpha1/istio_types.go
@@ -57,7 +57,7 @@ type IstioSpec struct {
 	// +kubebuilder:validation:Enum=ambient;default;demo;empty;external;openshift-ambient;openshift;preview;stable
 	Profile string `json:"profile,omitempty"`
 
-	// Namespace to which the Istio components should be installed.
+	// Namespace to which the Istio components should be installed. Note that this field is immutable.
 	// +operator-sdk:csv:customresourcedefinitions:type=spec,xDescriptors={"urn:alm:descriptor:io.kubernetes:Namespace"}
 	// +kubebuilder:default=istio-system
 	// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="Value is immutable"
diff --git a/bundle/manifests/sailoperator.clusterserviceversion.yaml b/bundle/manifests/sailoperator.clusterserviceversion.yaml
index be364f9c9..cd0ba32b0 100644
--- a/bundle/manifests/sailoperator.clusterserviceversion.yaml
+++ b/bundle/manifests/sailoperator.clusterserviceversion.yaml
@@ -34,7 +34,7 @@ metadata:
     capabilities: Seamless Upgrades
     categories: OpenShift Optional, Integration & Delivery, Networking, Security
     containerImage: quay.io/maistra-dev/sail-operator:0.2-latest
-    createdAt: "2024-10-15T05:04:53Z"
+    createdAt: "2024-10-15T06:09:50Z"
     description: Experimental operator for installing Istio service mesh
     features.operators.openshift.io/cnf: "false"
     features.operators.openshift.io/cni: "true"
@@ -273,6 +273,7 @@ spec:
         x-descriptors:
         - urn:alm:descriptor:com.tectonic.ui:booleanSwitch
       - description: Namespace to which the Istio components should be installed.
+          Note that this field is immutable.
         displayName: Namespace
         path: namespace
         x-descriptors:
diff --git a/bundle/manifests/sailoperator.io_istios.yaml b/bundle/manifests/sailoperator.io_istios.yaml
index 5d386dcbf..c82363824 100644
--- a/bundle/manifests/sailoperator.io_istios.yaml
+++ b/bundle/manifests/sailoperator.io_istios.yaml
@@ -86,6 +86,7 @@ spec:
               namespace:
                 default: istio-system
                 description: Namespace to which the Istio components should be installed.
+                  Note that this field is immutable.
                 type: string
                 x-kubernetes-validations:
                 - message: Value is immutable
diff --git a/chart/crds/sailoperator.io_istios.yaml b/chart/crds/sailoperator.io_istios.yaml
index 2c98e6f7e..39ab1b09a 100644
--- a/chart/crds/sailoperator.io_istios.yaml
+++ b/chart/crds/sailoperator.io_istios.yaml
@@ -86,6 +86,7 @@ spec:
               namespace:
                 default: istio-system
                 description: Namespace to which the Istio components should be installed.
+                  Note that this field is immutable.
                 type: string
                 x-kubernetes-validations:
                 - message: Value is immutable
diff --git a/docs/README.md b/docs/README.md
index 25f05f8bd..fb9e24714 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -56,7 +56,7 @@ Sail Operator manages the lifecycle of your Istio control planes. Instead of cre
 ## Concepts
 
 ### Istio resource
-The `Istio` resource is used to manage your Istio control planes. It is a cluster-wide resource, as the Istio control plane operates in and requires access to the entire cluster. To select a namespace to run the control plane pods in, you can use the `spec.namespace` field. You can access all helm chart options through the `values` field in the `spec`:
+The `Istio` resource is used to manage your Istio control planes. It is a cluster-wide resource, as the Istio control plane operates in and requires access to the entire cluster. To select a namespace to run the control plane pods in, you can use the `spec.namespace` field. Note that this field is immutable, though: in order to move a control plane to another namespace, you have to remove the Istio resource and recreate it with a different `spec.namespace`. You can access all helm chart options through the `values` field in the `spec`:
 
 ```yaml
 apiVersion: sailoperator.io/v1alpha1
diff --git a/docs/api-reference/sailoperator.io.md b/docs/api-reference/sailoperator.io.md
index 5e7ba430e..76c1f46fb 100644
--- a/docs/api-reference/sailoperator.io.md
+++ b/docs/api-reference/sailoperator.io.md
@@ -909,7 +909,7 @@ _Appears in:_
 | `version` _string_ | Defines the version of Istio to install. Must be one of: v1.23.2, v1.22.5, v1.21.6, latest. | v1.23.2 | Enum: [v1.23.2 v1.22.5 v1.21.6 latest]   |
 | `updateStrategy` _[IstioUpdateStrategy](#istioupdatestrategy)_ | Defines the update strategy to use when the version in the Istio CR is updated. | \{ type:InPlace \} |  |
 | `profile` _string_ | The built-in installation configuration profile to use. The 'default' profile is always applied. On OpenShift, the 'openshift' profile is also applied on top of 'default'. Must be one of: ambient, default, demo, empty, external, openshift-ambient, openshift, preview, stable. |  | Enum: [ambient default demo empty external openshift-ambient openshift preview stable]   |
-| `namespace` _string_ | Namespace to which the Istio components should be installed. | istio-system |  |
+| `namespace` _string_ | Namespace to which the Istio components should be installed. Note that this field is immutable. | istio-system |  |
 | `values` _[Values](#values)_ | Defines the values to be passed to the Helm charts when installing Istio. |  |  |