Wow... I feel like an idiot now.
But first, my excuse :
Before, I had the 'Targets Allowed' set to 'Enemy,NotSelf', and it still splashed to my allies.
But, after setting them to 'Air,Enemy,Ground', the problem was fixed.
That was a complete waste of time...
EDIT - +rep was given to you, scorpion182. No worries.