diff --git a/enabler/src/de/schildbach/pte/VmsProvider.java b/enabler/src/de/schildbach/pte/VmsProvider.java
index 75ba443f..2c66b30c 100644
--- a/enabler/src/de/schildbach/pte/VmsProvider.java
+++ b/enabler/src/de/schildbach/pte/VmsProvider.java
@@ -37,7 +37,11 @@ public class VmsProvider extends AbstractEfaProvider {
     private static final HttpUrl API_BASE = HttpUrl.parse("https://www.vms.de/vms2/");
 
     public VmsProvider() {
-        super(NetworkId.VMS, API_BASE);
+        this(API_BASE);
+    }
+
+    public VmsProvider(final HttpUrl apiBase) {
+        super(NetworkId.VMS, apiBase);
         setRequestUrlEncoding(Charsets.UTF_8);
         setUseLineRestriction(false);
     }