diff --git a/core/src/raw/http_util/body.rs b/core/src/raw/http_util/body.rs
index bcbde6db8660..7583f443744d 100644
--- a/core/src/raw/http_util/body.rs
+++ b/core/src/raw/http_util/body.rs
@@ -91,7 +91,7 @@ impl IncomingAsyncBody {
 
     /// Consume the response to bytes.
     ///
-    /// Borrowed from hyper's [`to_bytes`](https://docs.rs/hyper/latest/hyper/body/fn.to_bytes.html).
+    /// This code is Inspired from hyper's [`to_bytes`](https://docs.rs/hyper/latest/hyper/body/fn.to_bytes.html).
     pub async fn bytes(mut self) -> Result<Bytes> {
         use oio::ReadExt;
 
diff --git a/core/src/services/memcached/backend.rs b/core/src/services/memcached/backend.rs
index b89e32afdd92..23fad5b50fdf 100644
--- a/core/src/services/memcached/backend.rs
+++ b/core/src/services/memcached/backend.rs
@@ -271,8 +271,6 @@ impl kv::Adapter for Adapter {
 }
 
 /// A `bb8::ManageConnection` for `memcache_async::ascii::Protocol`.
-///
-/// Most code is borrowed from [bb8-memcached](https://github.com/dqminh/bb8-memcached/blob/master/src/client.rs).
 #[derive(Clone, Debug)]
 struct MemcacheConnectionManager {
     address: String,