diff --git a/apis/elbv2/v1beta1/targetgroupbinding_types.go b/apis/elbv2/v1beta1/targetgroupbinding_types.go
index 4275bdbf4..7d5026218 100644
--- a/apis/elbv2/v1beta1/targetgroupbinding_types.go
+++ b/apis/elbv2/v1beta1/targetgroupbinding_types.go
@@ -115,6 +115,7 @@ type TargetGroupBindingNetworking struct {
 // TargetGroupBindingSpec defines the desired state of TargetGroupBinding
 type TargetGroupBindingSpec struct {
 	// targetGroupARN is the Amazon Resource Name (ARN) for the TargetGroup.
+	// +kubebuilder:validation:MinLength=1
 	TargetGroupARN string `json:"targetGroupARN"`
 
 	// targetType is the TargetType of TargetGroup. If unspecified, it will be automatically inferred.
diff --git a/config/crd/bases/elbv2.k8s.aws_targetgroupbindings.yaml b/config/crd/bases/elbv2.k8s.aws_targetgroupbindings.yaml
index 018293426..6a7160053 100644
--- a/config/crd/bases/elbv2.k8s.aws_targetgroupbindings.yaml
+++ b/config/crd/bases/elbv2.k8s.aws_targetgroupbindings.yaml
@@ -294,6 +294,7 @@ spec:
                 type: object
               targetGroupARN:
                 description: targetGroupARN is the Amazon Resource Name (ARN) for the TargetGroup.
+                minLength: 1
                 type: string
               targetType:
                 description: targetType is the TargetType of TargetGroup. If unspecified, it will be automatically inferred.