Charles nodded his head. "Kurt..." He hesitated, biting his bottom lip as he thought about what he wanted to say. "When you knew me and I had my powers, I presume I was in a wheelchair?" He sighed. "In my present condition, I've taken a serum that allows me to walk. The serum also affects my spine. As long as I can walk, I do not have my powers." He sipped at his pint, glancing up at Kurt. "As long as I can walk, I have no mutation."