“But when I got to Europe my first race was terrible. Never in my dreams did I think I would run that badly.
“When I ran again my time came down quite significantly, which I’m very comfortable with.
“Now I’m really excited about the next race. I’m feeling confident.”
Pistorius, who runs in carbon fibre blades, beat the qualifying time last July to earn a place at the 2011 World Championships, where he became the first amputee to compete.
He last ran the required time at the Provincial Championships for Gauteng North in a selection event for the South African National Championships in March.
He needs to clock the qualification time before the end of June to earn a place at London 2012.