Ford Ka 'lights on' buzzer gone mad

[Gdgd]

Hey guys

Got a 2001 (Y) Ford Ka - the buzzer for warning the lights are on when a door is opened has broken - it is on all the time. I had a look/removed the corresponding switch on the door but all appears ok there.

I removed the fuse for the drive home as the warning noise is an intolerable one but this puts out the nearside front/rear sidelights so not ideal.

Is there a easy way to fix or just deactivate the warning/speaker?

Thanks in advance