diff --git a/CHANGELOG.md b/CHANGELOG.md
index c6af0a7..5923ec1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Add `serde` feature to support config serializing and deserializing
+
 ---
 ## 0.1.4
 
diff --git a/src/codec/decoder/ordered.rs b/src/codec/decoder/ordered.rs
index cc417c7..80d4d97 100644
--- a/src/codec/decoder/ordered.rs
+++ b/src/codec/decoder/ordered.rs
@@ -49,7 +49,7 @@ where
 {
     fn ordered(self, max_channels: usize) -> Order<Self> {
         assert!(
-            max_channels < usize::from(u8::MAX),
+            max_channels < 256,
             "max channels should not be larger than u8::MAX"
         );
         assert!(max_channels > 0, "max_channels > 0");