diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c
index e73f9ab15939..55d6dff37daf 100644
--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c
@@ -363,7 +363,7 @@ static int perf_ftrace_function_register(struct perf_event *event)
 {
 	struct ftrace_ops *ops = &event->ftrace_ops;
 
-	ops->flags   |= FTRACE_OPS_FL_RCU;
+	ops->flags   = FTRACE_OPS_FL_RCU;
 	ops->func    = perf_ftrace_function_call;
 	ops->private = (void *)(unsigned long)nr_cpu_ids;