diff --git a/benches/zopfli.rs b/benches/zopfli.rs
index 28728096..acef1951 100644
--- a/benches/zopfli.rs
+++ b/benches/zopfli.rs
@@ -8,8 +8,6 @@ use oxipng::*;
 use std::path::PathBuf;
 use test::Bencher;
 
-const DEFAULT_DEFLATER: BufferedZopfliDeflater = BufferedZopfliDeflater::default();
-
 #[bench]
 fn zopfli_16_bits_strategy_0(b: &mut Bencher) {
     let input = test::black_box(PathBuf::from("tests/files/rgb_16_should_be_rgb_16.png"));
@@ -17,7 +15,7 @@ fn zopfli_16_bits_strategy_0(b: &mut Bencher) {
     let max_size = AtomicMin::new(Some(png.idat_data.len()));
 
     b.iter(|| {
-        DEFAULT_DEFLATER
+        BufferedZopfliDeflater::default()
             .deflate(png.raw.data.as_ref(), &max_size)
             .ok();
     });
@@ -30,7 +28,7 @@ fn zopfli_8_bits_strategy_0(b: &mut Bencher) {
     let max_size = AtomicMin::new(Some(png.idat_data.len()));
 
     b.iter(|| {
-        DEFAULT_DEFLATER
+        BufferedZopfliDeflater::default()
             .deflate(png.raw.data.as_ref(), &max_size)
             .ok();
     });
@@ -45,7 +43,7 @@ fn zopfli_4_bits_strategy_0(b: &mut Bencher) {
     let max_size = AtomicMin::new(Some(png.idat_data.len()));
 
     b.iter(|| {
-        DEFAULT_DEFLATER
+        BufferedZopfliDeflater::default()
             .deflate(png.raw.data.as_ref(), &max_size)
             .ok();
     });
@@ -60,7 +58,7 @@ fn zopfli_2_bits_strategy_0(b: &mut Bencher) {
     let max_size = AtomicMin::new(Some(png.idat_data.len()));
 
     b.iter(|| {
-        DEFAULT_DEFLATER
+        BufferedZopfliDeflater::default()
             .deflate(png.raw.data.as_ref(), &max_size)
             .ok();
     });
@@ -75,7 +73,7 @@ fn zopfli_1_bits_strategy_0(b: &mut Bencher) {
     let max_size = AtomicMin::new(Some(png.idat_data.len()));
 
     b.iter(|| {
-        DEFAULT_DEFLATER
+        BufferedZopfliDeflater::default()
             .deflate(png.raw.data.as_ref(), &max_size)
             .ok();
     });