diff --git a/cluster/charts/rook-ceph/templates/resources.yaml b/cluster/charts/rook-ceph/templates/resources.yaml
index f83db660c..4a30bbc4a 100644
--- a/cluster/charts/rook-ceph/templates/resources.yaml
+++ b/cluster/charts/rook-ceph/templates/resources.yaml
@@ -1288,7 +1288,7 @@ spec:
               x-kubernetes-preserve-unknown-fields: true
       subresources:
         status: {}
----    
+---
 {{- else }}
 ---
 apiVersion: apiextensions.k8s.io/v1beta1
@@ -1432,7 +1432,6 @@ spec:
                 storageClassDeviceSets: {}
             driveGroups:
               type: array
-              nullable: true
               items:
                 properties:
                   name:
diff --git a/cluster/examples/kubernetes/ceph/pre-k8s-1.16/crd.yaml b/cluster/examples/kubernetes/ceph/pre-k8s-1.16/crd.yaml
index ad9bd1e55..10614fa05 100644
--- a/cluster/examples/kubernetes/ceph/pre-k8s-1.16/crd.yaml
+++ b/cluster/examples/kubernetes/ceph/pre-k8s-1.16/crd.yaml
@@ -158,7 +158,6 @@ spec:
                 storageClassDeviceSets: {}
             driveGroups:
               type: array
-              nullable: true
               items:
                 properties:
                   name:
diff --git a/tests/framework/installer/ceph_manifests.go b/tests/framework/installer/ceph_manifests.go
index 0f61b5887..ef60523fe 100644
--- a/tests/framework/installer/ceph_manifests.go
+++ b/tests/framework/installer/ceph_manifests.go
@@ -1508,7 +1508,6 @@ spec:
                 storageClassDeviceSets: {}
             driveGroups:
               type: array
-              nullable: true
               items:
                 properties:
                   name: