diff --git a/src/apu.rs b/src/apu.rs
index 1d7c5f9fc464a65be0a434c7ca984b8add81e345..07dc230b2ee3fda256092154b4047468e0eff7c6 100644
--- a/src/apu.rs
+++ b/src/apu.rs
@@ -186,7 +186,7 @@ impl Apu {
                 (sampling_rate as f32 * buffer_size) as usize * 2,
             ),
             audio_buffer_max: (sampling_rate as f32 * buffer_size) as usize * 2,
-            clock_freq: clock_freq,
+            clock_freq,
         }
     }