diff --git a/dbus/sigsegv.c b/dbus/sigsegv.c
index 26bc204f..ab535bc2 100644
--- a/dbus/sigsegv.c
+++ b/dbus/sigsegv.c
@@ -99,7 +99,13 @@ static void signal_segv(int signum, siginfo_t* info, void*ptr) {
     jack_error("info.si_code  = %d (%s)", info->si_code, si_codes[info->si_code]);
     jack_error("info.si_addr  = %p", info->si_addr);
     for(i = 0; i < NGREG; i++)
-        jack_error("reg[%02d]       = 0x" REGFORMAT, i, ucontext->uc_mcontext.gregs[i]);
+        jack_error("reg[%02d]       = 0x" REGFORMAT, i, 
+#if defined(__powerpc__)
+                ucontext->uc_mcontext.uc_regs[i]
+#else
+                ucontext->uc_mcontext.gregs[i]
+#endif
+                );
 
 #if defined(SIGSEGV_STACK_X86) || defined(SIGSEGV_STACK_IA64)
 # if defined(SIGSEGV_STACK_IA64)