diff --git a/generator/service.go b/generator/service.go
index 5573e06..730577f 100644
--- a/generator/service.go
+++ b/generator/service.go
@@ -1,6 +1,7 @@
 package generator
 
 import (
+	"fmt"
 	"katenary/utils"
 	"regexp"
 	"strings"
@@ -59,6 +60,7 @@ func (s *Service) AddPort(port types.ServicePortConfig, serviceName ...string) {
 
 	if targetPort := utils.GetServiceNameByPort(int(port.Target)); targetPort == "" {
 		finalport = intstr.FromInt(int(port.Target))
+		name = fmt.Sprintf("port-%d", port.Target)
 	} else {
 		finalport = intstr.FromString(targetPort)
 		name = targetPort
diff --git a/generator/service_test.go b/generator/service_test.go
index 205c944..1afad1f 100644
--- a/generator/service_test.go
+++ b/generator/service_test.go
@@ -47,3 +47,37 @@ services:
 		t.Errorf("Expected 2 ports, got %d", foundPort)
 	}
 }
+
+func TestWithSeveralUnknownPorts(t *testing.T) {
+	composeFile := `
+services:
+  multi:
+    image: nginx
+    ports:
+      - 12443
+      - 12480
+    labels:
+      katenary.v3/ingress: |-
+        port: 12443
+`
+	tmpDir := setup(composeFile)
+	defer teardown(tmpDir)
+
+	currentDir, _ := os.Getwd()
+	os.Chdir(tmpDir)
+	defer os.Chdir(currentDir)
+
+	output := internalCompileTest(t, "-s", "templates/multi/service.yaml")
+	service := v1.Service{}
+	if err := yaml.Unmarshal([]byte(output), &service); err != nil {
+		t.Errorf(unmarshalError, err)
+	}
+
+	if len(service.Spec.Ports) != 2 {
+		t.Errorf("Expected 2 ports, got %d", len(service.Spec.Ports))
+	}
+	// ensure that both port names are different
+	if service.Spec.Ports[0].Name == service.Spec.Ports[1].Name {
+		t.Errorf("Expected different port names, got %s and %s", service.Spec.Ports[0].Name, service.Spec.Ports[1].Name)
+	}
+}