diff --git a/m1/perf/sched.c b/m1/perf/sched.c
index 52ea00c..ffe57c9 100644
--- a/m1/perf/sched.c
+++ b/m1/perf/sched.c
@@ -535,6 +535,8 @@ static int issue(struct insn *insn, unsigned *code)
 	if (insn->next_setter && !insn->next_setter->rmw)
 		unblock_after(insn->next_setter,
 		    end-insn->next_setter->latency);
+
+	return 0;
 }