diff --git a/cmd/tools/fast/fast.v b/cmd/tools/fast/fast.v
index da2b33397d..860d2c6b23 100644
--- a/cmd/tools/fast/fast.v
+++ b/cmd/tools/fast/fast.v
@@ -163,7 +163,7 @@ fn main() {
 		os.chdir('website')!
 		lexec('git checkout gh-pages')
 		os.mv('../index.html', 'index.html')!
-		lsystem('git commit -am "update benchmark"')
+		lsystem('git commit -am "update benchmark for commit ${commit}"')
 		lsystem('git push origin gh-pages')
 		elog('uploading done')
 	}