Next wave hotkey?

[dimm_ddr]

Is there a hotkey for the next wave in the Forge? It is really distracting to try to hit the button with the mouse pointer in the middle of the fight when you try to both move around to not die, attack enemies to keep the combo going and also trigger next wave to have enough enemies to push combo even higher.

[LuckyWig]

it's the same key as quit, can't remember default I changed it to Q