diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index e18dfdc..821c158 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -792,8 +792,7 @@
 	print_bad_events(bad, total);
 }
 
-static int			info_threads;
-static int			info_map;
+static bool info_threads, info_map;
 
 static void dump_threads(void)
 {