diff --git a/tests/unittests/xmpp/stub_xmpp.c b/tests/unittests/xmpp/stub_xmpp.c
index 85e026d1..bc2c50db 100644
--- a/tests/unittests/xmpp/stub_xmpp.c
+++ b/tests/unittests/xmpp/stub_xmpp.c
@@ -34,11 +34,6 @@ const char * connection_get_fulljid(void)
     return (char *)mock();
 }
 
-const char * session_get_domain(void)
-{
-    return NULL;
-}
-
 const char * connection_get_domain(void)
 {
     return NULL;