diff --git a/authentication/source/java/ch/systemsx/cisd/authentication/DummyAuthenticationService.java b/authentication/source/java/ch/systemsx/cisd/authentication/DummyAuthenticationService.java
index 201c6498b8bac006ebcf031a651e26a5867d2d3f..3667453760aaa001469c175453c015436d23c37d 100644
--- a/authentication/source/java/ch/systemsx/cisd/authentication/DummyAuthenticationService.java
+++ b/authentication/source/java/ch/systemsx/cisd/authentication/DummyAuthenticationService.java
@@ -47,7 +47,7 @@ public final class DummyAuthenticationService implements IAuthenticationService
 
     public final Principal getPrincipal(String applicationToken, String user)
     {
-        return new Principal(user, "John", "Doe", "jdoe@somewhere.org");
+        return new Principal(user, "John", "Doe", "franz-josef.elmer@systemsx.ch");
     }
 
     public final void check()