The ruling by the Constitutional Court on Thursday clears the way for a judge to sentence Pistorius for murder at a hearing scheduled for April 18.
Defense lawyer Andrew Fawcett confirmed the Constitutional Court’s decision and said: “We’ll proceed to the sentencing.”
Pistorius, who killed girlfriend Reeva Steenkamp in his home in 2013, had appealed to the Constitutional Court, saying another court erred when it overturned a manslaughter conviction and declared the Olympic athlete guilty of murder.
The minimum sentence for murder in South Africa is 15 years, though a judge can reduce that sentence for what the law describes as exceptional circumstances.