diff --git a/server/src/uds/transports/NX/NXTransport.py b/server/src/uds/transports/NX/NXTransport.py
index 6925f227..f909d6f5 100644
--- a/server/src/uds/transports/NX/NXTransport.py
+++ b/server/src/uds/transports/NX/NXTransport.py
@@ -202,6 +202,6 @@ class NXTransport(Transport):
         }.get(os['OS'])
 
         if os is None:
-            return super(NXTransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/direct.py'.format(os)).format(r=r)
diff --git a/server/src/uds/transports/NX/TSNXTransport.py b/server/src/uds/transports/NX/TSNXTransport.py
index 03aa1c94..05177a83 100644
--- a/server/src/uds/transports/NX/TSNXTransport.py
+++ b/server/src/uds/transports/NX/TSNXTransport.py
@@ -237,7 +237,7 @@ class TSNXTransport(Transport):
         }.get(os['OS'])
 
         if os is None:
-            return super(TSNXTransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/tunnel.py'.format(os)).format(
             r=r,