diff --git a/api/v1alpha1/storageclassclaim_types.go b/api/v1alpha1/storageclassclaim_types.go
index 2563aa7a5..906af7dbb 100644
--- a/api/v1alpha1/storageclassclaim_types.go
+++ b/api/v1alpha1/storageclassclaim_types.go
@@ -73,7 +73,9 @@ type StorageClassClaim struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
-	Spec   StorageClassClaimSpec   `json:"spec,omitempty"`
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:XValidation:rule="oldSelf == self",message="spec is immutable"
+	Spec   StorageClassClaimSpec   `json:"spec"`
 	Status StorageClassClaimStatus `json:"status,omitempty"`
 }
 
diff --git a/config/crd/bases/ocs.openshift.io_storageclassclaims.yaml b/config/crd/bases/ocs.openshift.io_storageclassclaims.yaml
index c3199f5a7..ae1360ccd 100644
--- a/config/crd/bases/ocs.openshift.io_storageclassclaims.yaml
+++ b/config/crd/bases/ocs.openshift.io_storageclassclaims.yaml
@@ -74,6 +74,9 @@ spec:
             - storageClient
             - type
             type: object
+            x-kubernetes-validations:
+            - message: spec is immutable
+              rule: oldSelf == self
           status:
             description: StorageClassClaimStatus defines the observed state of StorageClassClaim
             properties:
@@ -84,6 +87,8 @@ spec:
                   type: string
                 type: array
             type: object
+        required:
+        - spec
         type: object
     served: true
     storage: true