diff --git a/pkg/guestagent/kubernetesservice/kubernetesservice.go b/pkg/guestagent/kubernetesservice/kubernetesservice.go
index e0e5d4730843..228f5e68e24d 100644
--- a/pkg/guestagent/kubernetesservice/kubernetesservice.go
+++ b/pkg/guestagent/kubernetesservice/kubernetesservice.go
@@ -7,6 +7,7 @@ import (
 	"net"
 	"net/url"
 	"os"
+	"strings"
 	"sync"
 	"time"
 
@@ -142,7 +143,7 @@ func (s *ServiceWatcher) GetPorts() []Entry {
 			}
 
 			entries = append(entries, Entry{
-				Protocol: Protocol(portEntry.Protocol),
+				Protocol: Protocol(strings.ToLower(string(portEntry.Protocol))),
 				IP:       net.ParseIP("0.0.0.0"),
 				Port:     uint16(port),
 			})