Lissandra's Ulitmate self-cast (Alt + R)

When I play Lissandra I am getting annoyed by a bug on her ult self-cast (alt + R) when ever I play her and press 'alt + r' and the cursor is accidentally on an enemy champion, it ult that champion instead of me. In team fights it's really hard too get the cursor off an enemy champion. cause you want too do all your abilities on the target and then you want too ult your selves and need to get the cursor out of the way, I am having problems with this. could you please try too change it. Thank you already.

Greetings Timothyhero

:D

[Gameplay]