diff --git a/cad/nvc/files/patch-thirdparty_cpustate.c b/cad/nvc/files/patch-thirdparty_cpustate.c
index 074770c7d712..f78ac6e70192 100644
--- a/cad/nvc/files/patch-thirdparty_cpustate.c
+++ b/cad/nvc/files/patch-thirdparty_cpustate.c
@@ -1,16 +1,16 @@
 --- thirdparty/cpustate.c.orig	2022-08-10 16:48:11 UTC
 +++ thirdparty/cpustate.c
 @@ -103,6 +103,13 @@ void fill_cpu_state(struct cpu_state *cpu, ucontext_t 
  
     for (int i = 0; i < 16; i++)
        cpu->regs[i] = uc->uc_mcontext._gregs[i];
 +
 +#elif defined __FreeBSD__ && defined __powerpc__
 +   cpu->pc = uc->uc_mcontext.mc_srr0;
 +   cpu->sp = uc->uc_mcontext.mc_gpr[1];
 +
-+   for (int i = 0; i < 31; i++)
++   for (int i = 0; i < 32; i++)
 +      cpu->regs[i] = uc->uc_mcontext.mc_gpr[i];
  #elif defined __OpenBSD__ && defined __x86_64__
     cpu->pc = uc->sc_rip;
     cpu->sp = uc->sc_rsp;