diff --git a/pkg/reconciler/eventlistener/resources/service.go b/pkg/reconciler/eventlistener/resources/service.go
index ef195d40c..6adffd41c 100644
--- a/pkg/reconciler/eventlistener/resources/service.go
+++ b/pkg/reconciler/eventlistener/resources/service.go
@@ -77,7 +77,7 @@ func ServicePort(el *v1beta1.EventListener, c Config) corev1.ServicePort {
 	var elCert, elKey string
 
 	servicePortName := eventListenerServicePortName
-	servicePortPort := *c.Port
+	servicePort := *c.Port
 
 	certEnv := map[string]*corev1.EnvVarSource{}
 	if el.Spec.Resources.KubernetesResource != nil {
@@ -87,6 +87,9 @@ func ServicePort(el *v1beta1.EventListener, c Config) corev1.ServicePort {
 					el.Spec.Resources.KubernetesResource.Template.Spec.Containers[0].Env[i].ValueFrom
 			}
 		}
+		if el.Spec.Resources.KubernetesResource.ServicePort != nil {
+			servicePort = int(*el.Spec.Resources.KubernetesResource.ServicePort)
+		}
 	}
 
 	if v, ok := certEnv["TLS_CERT"]; ok {
@@ -105,14 +108,14 @@ func ServicePort(el *v1beta1.EventListener, c Config) corev1.ServicePort {
 		if *c.Port == DefaultPort {
 			// We return port 8443 if TLS is enabled and the default HTTP port is set.
 			// This effectively makes 8443 the default HTTPS port unless a user explicitly sets a different port.
-			servicePortPort = 8443
+			servicePort = 8443
 		}
 	}
 
 	return corev1.ServicePort{
 		Name:     servicePortName,
 		Protocol: corev1.ProtocolTCP,
-		Port:     int32(servicePortPort),
+		Port:     int32(servicePort),
 		TargetPort: intstr.IntOrString{
 			IntVal: int32(eventListenerContainerPort),
 		},
diff --git a/pkg/reconciler/eventlistener/resources/service_test.go b/pkg/reconciler/eventlistener/resources/service_test.go
index 7e19774c5..d1f845a33 100644
--- a/pkg/reconciler/eventlistener/resources/service_test.go
+++ b/pkg/reconciler/eventlistener/resources/service_test.go
@@ -138,6 +138,9 @@ func TestService(t *testing.T) {
 }
 
 func TestServicePort(t *testing.T) {
+
+	k8sResSvcPort := int32(80)
+
 	tests := []struct {
 		name                string
 		el                  *v1beta1.EventListener
@@ -200,6 +203,22 @@ func TestServicePort(t *testing.T) {
 				IntVal: int32(eventListenerContainerPort),
 			},
 		},
+	}, {
+		name: "EventListener with ServicePort 80 in KubernetesResource",
+		el: makeEL(withStatus, withTLSPort, func(el *v1beta1.EventListener) {
+			el.Spec.Resources.KubernetesResource = &v1beta1.KubernetesResource{
+				ServicePort: &k8sResSvcPort,
+			}
+		}),
+		config: *MakeConfig(),
+		expectedServicePort: corev1.ServicePort{
+			Name:     eventListenerServicePortName,
+			Protocol: corev1.ProtocolTCP,
+			Port:     k8sResSvcPort,
+			TargetPort: intstr.IntOrString{
+				IntVal: int32(eventListenerContainerPort),
+			},
+		},
 	}, {
 		name: "EventListener with ServicePort: 80",
 		el:   makeEL(withStatus, withServicePort80),