diff --git a/manager/controlapi/service.go b/manager/controlapi/service.go
index 0b5aae8cbda5d..13cfe2ed1dd58 100644
--- a/manager/controlapi/service.go
+++ b/manager/controlapi/service.go
@@ -182,7 +182,7 @@ func validateServiceSpec(spec *api.ServiceSpec) error {
 
 // checkPortConflicts does a best effort to find if the passed in spec has port
 // conflicts with existing services.
-func (s *Server) checkPortConflicts(spec *api.ServiceSpec) error {
+func (s *Server) checkPortConflicts(spec *api.ServiceSpec, serviceID string) error {
 	if spec.Endpoint == nil {
 		return nil
 	}
@@ -215,6 +215,10 @@ func (s *Server) checkPortConflicts(spec *api.ServiceSpec) error {
 	}
 
 	for _, service := range services {
+		// If service ID is the same (and not "") then this is an update
+		if serviceID != "" && serviceID == service.ID {
+			continue
+		}
 		if service.Spec.Endpoint != nil {
 			for _, pc := range service.Spec.Endpoint.Ports {
 				if reqPorts[pcToString(pc)] {
@@ -243,7 +247,7 @@ func (s *Server) CreateService(ctx context.Context, request *api.CreateServiceRe
 		return nil, err
 	}
 
-	if err := s.checkPortConflicts(request.Spec); err != nil {
+	if err := s.checkPortConflicts(request.Spec, ""); err != nil {
 		return nil, err
 	}
 
@@ -309,7 +313,7 @@ func (s *Server) UpdateService(ctx context.Context, request *api.UpdateServiceRe
 	}
 
 	if request.Spec.Endpoint != nil && !reflect.DeepEqual(request.Spec.Endpoint, service.Spec.Endpoint) {
-		if err := s.checkPortConflicts(request.Spec); err != nil {
+		if err := s.checkPortConflicts(request.Spec, request.ServiceID); err != nil {
 			return nil, err
 		}
 	}