diff --git a/audio/src/buffer_source_node.rs b/audio/src/buffer_source_node.rs
index 73850bcc..7c4fde3b 100644
--- a/audio/src/buffer_source_node.rs
+++ b/audio/src/buffer_source_node.rs
@@ -198,7 +198,7 @@ impl AudioBuffer {
 
     pub fn from_buffers(buffers: Vec<Vec<f32>>) -> Self {
         for buf in &buffers {
-            assert!(buf.len() == buffers[0].len())
+            assert_eq!(buf.len(), buffers[0].len())
         }
 
         Self { buffers }
diff --git a/audio/src/decoder.rs b/audio/src/decoder.rs
index d38b95f3..8d99999c 100644
--- a/audio/src/decoder.rs
+++ b/audio/src/decoder.rs
@@ -51,9 +51,6 @@ impl<E> AudioDecoderCallbacks<E> {
     }
 }
 
-unsafe impl<E> Send for AudioDecoderCallbacks<E> {}
-unsafe impl<E> Sync for AudioDecoderCallbacks<E> {}
-
 pub struct AudioDecoderCallbacksBuilder<E> {
     eos: Option<SendBoxFnOnce<'static, ()>>,
     error: Option<SendBoxFnOnce<'static, (E,)>>,