1 files changed, 2 insertions, 1 deletions

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 4d33b55d5584..bd71b8ceafb7 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -189,8 +189,9 @@ out_delete:
         return ret;
 }
 
-static const char *const diff_usage[] = {
+static const char * const diff_usage[] = {
         "perf diff [<options>] [old_file] [new_file]",
+        NULL,
 };
 
 static const struct option options[] = {