diff --git a/apis/bases/network.openstack.org_ipsets.yaml b/apis/bases/network.openstack.org_ipsets.yaml
index cd6c2fc3..d33687ee 100644
--- a/apis/bases/network.openstack.org_ipsets.yaml
+++ b/apis/bases/network.openstack.org_ipsets.yaml
@@ -195,7 +195,6 @@ spec:
                   - address
                   - dnsDomain
                   - network
-                  - serviceNetwork
                   - subnet
                   type: object
                 type: array
diff --git a/apis/network/v1beta1/ipset_types.go b/apis/network/v1beta1/ipset_types.go
index 81eb7b51..d0ee8483 100644
--- a/apis/network/v1beta1/ipset_types.go
+++ b/apis/network/v1beta1/ipset_types.go
@@ -83,6 +83,7 @@ type IPSetReservation struct {
 	// DNSDomain of the subnet
 	DNSDomain string `json:"dnsDomain"`
 
+	// +kubebuilder:validation:Optional
 	// ServiceNetwork mapping
 	ServiceNetwork ServiceNetNameStr `json:"serviceNetwork"`
 }
diff --git a/config/crd/bases/network.openstack.org_ipsets.yaml b/config/crd/bases/network.openstack.org_ipsets.yaml
index cd6c2fc3..d33687ee 100644
--- a/config/crd/bases/network.openstack.org_ipsets.yaml
+++ b/config/crd/bases/network.openstack.org_ipsets.yaml
@@ -195,7 +195,6 @@ spec:
                   - address
                   - dnsDomain
                   - network
-                  - serviceNetwork
                   - subnet
                   type: object
                 type: array