1 files changed, 6 insertions, 6 deletions
diff --git a/src/libstd/io/buffered.rs b/src/libstd/io/buffered.rs
index d74acb5f59b..8c1897339cb 100644
--- a/src/libstd/io/buffered.rs
+++ b/src/libstd/io/buffered.rs
@@ -438,22 +438,22 @@ mod test {
 
     #[bench]
     fn bench_buffered_reader(bh: &mut Harness) {
-        do bh.iter {
+        bh.iter(|| {
             BufferedReader::new(NullStream);
-        }
+        });
     }
 
     #[bench]
     fn bench_buffered_writer(bh: &mut Harness) {
-        do bh.iter {
+        bh.iter(|| {
             BufferedWriter::new(NullStream);
-        }
+        });
     }
 
     #[bench]
     fn bench_buffered_stream(bh: &mut Harness) {
-        do bh.iter {
+        bh.iter(|| {
             BufferedStream::new(NullStream);
-        }
+        });
     }
 }