* desc.c (sys_epoll_pwait): Fix output formatting bug.
diff --git a/desc.c b/desc.c
index c615663..9571e49 100644
--- a/desc.c
+++ b/desc.c
@@ -772,8 +772,10 @@
 sys_epoll_pwait(struct tcb *tcp)
 {
 	epoll_wait_common(tcp);
-	if (exiting(tcp))
+	if (exiting(tcp)) {
+		tprintf(", ");
 		print_sigset(tcp, tcp->u_arg[4], 0);
+	}
 	return 0;
 }