diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 876b2720253da27f83e0ad6a6db75c0b0c06aff6..ec1317483010341097a14156558006e4fd330d33 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -4904,7 +4904,7 @@ int pevent_register_event_handler(struct pevent *pevent,
  not_found:
 	/* Save for later use. */
 	handle = malloc_or_die(sizeof(*handle));
-	memset(handle, 0, sizeof(handle));
+	memset(handle, 0, sizeof(*handle));
 	handle->id = id;
 	if (event_name)
 		handle->event_name = strdup(event_name);