diff --git a/src/test/bench/core-std.rs b/src/test/bench/core-std.rs
index 0d1911af9e0..4db8cfa6565 100644
--- a/src/test/bench/core-std.rs
+++ b/src/test/bench/core-std.rs
@@ -23,23 +23,23 @@ use std::str;
 use std::vec;
 use std::io::File;
 
-macro_rules! bench (
-    ($argv:expr, $id:ident) => (maybe_run_test($argv.as_slice(),
-                                               stringify!($id).to_string(),
-                                                          $id))
-)
-
 fn main() {
     let argv = os::args().move_iter().map(|x| x.to_string()).collect::<Vec<String>>();
     let _tests = argv.slice(1, argv.len());
 
-    bench!(argv, shift_push);
-    bench!(argv, read_line);
-    bench!(argv, vec_plus);
-    bench!(argv, vec_append);
-    bench!(argv, vec_push_all);
-    bench!(argv, is_utf8_ascii);
-    bench!(argv, is_utf8_multibyte);
+    macro_rules! bench (
+        ($id:ident) =>
+            (maybe_run_test(argv.as_slice(),
+                            stringify!($id).to_string(),
+                            $id)))
+
+    bench!(shift_push);
+    bench!(read_line);
+    bench!(vec_plus);
+    bench!(vec_append);
+    bench!(vec_push_all);
+    bench!(is_utf8_ascii);
+    bench!(is_utf8_multibyte);
 }
 
 fn maybe_run_test(argv: &[String], name: String, test: ||) {