2 files changed, 4 insertions, 2 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;
diff --git a/parse-events.h b/parse-events.h
index 32a8ff0..49de6bb 100644
--- a/parse-events.h
+++ b/parse-events.h
@@ -444,7 +444,8 @@ void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
 int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
                              int long_size);
 
-int pevent_parse_event(struct pevent *pevent, char *buf, unsigned long size, char *sys);
+int pevent_parse_event(struct pevent *pevent, const char *buf,
+                       unsigned long size, const char *sys);
 
 int pevent_register_event_handler(struct pevent *pevent, int id, char *sys_name, char *event_name,
                                   pevent_event_handler_func func, void *context);