diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index ba523d7beea2e571f4d9eec437208b0702c62c7b..a71cdc3c5df9a8d30f073c7fadc98975b263bf9b 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -158,7 +158,7 @@ static int trace_define_common_fields(void)
 	return ret;
 }
 
-void trace_destroy_fields(struct ftrace_event_call *call)
+static void trace_destroy_fields(struct ftrace_event_call *call)
 {
 	struct ftrace_event_field *field, *next;
 	struct list_head *head;