diff --git a/server/eebus/types.go b/server/eebus/types.go
index 6ad1248033..1da233e5e6 100644
--- a/server/eebus/types.go
+++ b/server/eebus/types.go
@@ -1,11 +1,15 @@
 package eebus
 
+import "github.com/evcc-io/evcc/util"
+
 const (
-	BrandName  string = "EVCC"
-	Model      string = "HEMS"
-	DeviceCode string = "EVCC_HEMS_01" // used as common name in cert generation
+	BrandName string = "EVCC"
+	Model     string = "HEMS"
 )
 
+// used as common name in cert generation
+var DeviceCode = util.Getenv("EEBUS_DEVICE_CODE", "EVCC_HEMS_01")
+
 type Config struct {
 	URI         string
 	ShipID      string