Highbeam on by itself when starting bike cold.

[BlackAkumaRR]

When I start up my bike now and the engine is cold, the highbeam will be on by itself while the switch is off.
I flick on the highbeam switch, and flick it back off, highbeam goes on by itself again.

After the engine has warmed up, and I flick the switch on, then off. The high beam will go off..

Anyone had this problem? Anything I should look out for that is causing this?

Thanks.