diff --git a/qemu/exec.c b/qemu/exec.c
index 6d95c776..3475c86d 100644
--- a/qemu/exec.c
+++ b/qemu/exec.c
@@ -939,6 +939,7 @@ void cpu_abort(CPUState *cpu, const char *fmt, ...)
         struct sigaction act;
         sigfillset(&act.sa_mask);
         act.sa_handler = SIG_DFL;
+        act.sa_flags = 0;
         sigaction(SIGABRT, &act, NULL);
     }
 #endif