1 files changed, 2 insertions, 1 deletions

diff --git a/parse-events.c b/parse-events.c
index eca3b67..5503a18 100644
--- a/parse-events.c
+++ b/parse-events.c
@@ -4268,7 +4268,8 @@ static int find_event_handle(struct pevent *pevent, struct event_format *event)
  * /sys/kernel/debug/tracing/events/.../.../format
  */
 int pevent_parse_event(struct pevent *pevent,
-                       char *buf, unsigned long size, char *sys)
+                       const char *buf, unsigned long size,
+                       const char *sys)
 {
         struct event_format *event;
         int ret;