diff --git a/api/v1beta1/kafkacluster_types.go b/api/v1beta1/kafkacluster_types.go
index e8aa72bc8..b031e0e86 100644
--- a/api/v1beta1/kafkacluster_types.go
+++ b/api/v1beta1/kafkacluster_types.go
@@ -153,6 +153,9 @@ type DisruptionBudgetWithStrategy struct {
 
 // Broker defines the broker basic configuration
 type Broker struct {
+	// +kubebuilder:validation:Minimum=0
+	// +kubebuilder:validation:Maximum=65535
+	// +kubebuilder:validation:ExclusiveMaximum=true
 	Id                int32         `json:"id"`
 	BrokerConfigGroup string        `json:"brokerConfigGroup,omitempty"`
 	ReadOnlyConfig    string        `json:"readOnlyConfig,omitempty"`
diff --git a/charts/kafka-operator/templates/crds.yaml b/charts/kafka-operator/templates/crds.yaml
index 6b4746ecf..c6df9aaca 100644
--- a/charts/kafka-operator/templates/crds.yaml
+++ b/charts/kafka-operator/templates/crds.yaml
@@ -12456,7 +12456,10 @@ spec:
                     brokerConfigGroup:
                       type: string
                     id:
+                      exclusiveMaximum: true
                       format: int32
+                      maximum: 65535
+                      minimum: 0
                       type: integer
                     readOnlyConfig:
                       type: string
diff --git a/config/base/crds/kafka.banzaicloud.io_kafkaclusters.yaml b/config/base/crds/kafka.banzaicloud.io_kafkaclusters.yaml
index 8316fb02d..388e403a4 100644
--- a/config/base/crds/kafka.banzaicloud.io_kafkaclusters.yaml
+++ b/config/base/crds/kafka.banzaicloud.io_kafkaclusters.yaml
@@ -12293,7 +12293,10 @@ spec:
                     brokerConfigGroup:
                       type: string
                     id:
+                      exclusiveMaximum: true
                       format: int32
+                      maximum: 65535
+                      minimum: 0
                       type: integer
                     readOnlyConfig:
                       type: string