1 files changed, 1 insertions, 1 deletions

diff --git a/tools/perf/util/data_map.h b/tools/perf/util/data_map.h
index ae036ecd7625..3180ff7e3633 100644
--- a/tools/perf/util/data_map.h
+++ b/tools/perf/util/data_map.h
@@ -4,7 +4,7 @@
 #include "event.h"
 #include "header.h"
 
-typedef int (*event_type_handler_t)(event_t *, unsigned long, unsigned long);
+typedef int (*event_type_handler_t)(event_t *);
 
 struct perf_file_handler {
         event_type_handler_t    process_sample_event;