diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index 420e80e56e55..9fea72f19d85 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -156,11 +156,11 @@ TRACE_EVENT(sched_switch,
 	TP_fast_assign(
 		memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
 		__entry->prev_pid	= prev->pid;
-		__entry->prev_prio	= prev->prio;
+		__entry->prev_prio	= prev->prio == -1 ? 150 : prev->prio;
 		__entry->prev_state	= __trace_sched_switch_state(preempt, prev);
 		memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
 		__entry->next_pid	= next->pid;
-		__entry->next_prio	= next->prio;
+		__entry->next_prio	= next->prio == -1 ? 150 : next->prio;
 		/* XXX SCHED_DEADLINE */
 	),