diff --git a/actix-http/src/header/shared/quality.rs b/actix-http/src/header/shared/quality.rs
index 08e09d1fa..c80dd0a8e 100644
--- a/actix-http/src/header/shared/quality.rs
+++ b/actix-http/src/header/shared/quality.rs
@@ -158,13 +158,13 @@ impl TryFrom<f32> for Quality {
 /// let q1 = q(1.0);
 /// assert_eq!(q1, Quality::MAX);
 ///
-/// let q2 = q(0.0001);
+/// let q2 = q(0.001);
 /// assert_eq!(q2, Quality::MIN);
-
-/// let q2 = q(0.0);
-/// assert_eq!(q2, Quality::ZERO);
 ///
-/// let q3 = q(0.42);
+/// let q3 = q(0.0);
+/// assert_eq!(q3, Quality::ZERO);
+///
+/// let q4 = q(0.42);
 /// ```
 ///
 /// An out-of-range `f32` quality will panic.
diff --git a/src/http/header/accept_encoding.rs b/src/http/header/accept_encoding.rs
index c8ac9ef32..ca6799f61 100644
--- a/src/http/header/accept_encoding.rs
+++ b/src/http/header/accept_encoding.rs
@@ -27,11 +27,11 @@ common_header! {
     /// # Examples
     /// ```
     /// use actix_web::HttpResponse;
-    /// use actix_web::http::header::{AcceptEncoding, Encoding, QualityItem};
+    /// use actix_web::http::header::{AcceptEncoding, Encoding, Preference, QualityItem};
     ///
     /// let mut builder = HttpResponse::Ok();
     /// builder.insert_header(
-    ///     AcceptEncoding(vec![QualityItem::max(Encoding::Chunked)])
+    ///     AcceptEncoding(vec![QualityItem::max(Preference::Specific(Encoding::Gzip))])
     /// );
     /// ```
     ///
@@ -42,23 +42,8 @@ common_header! {
     /// let mut builder = HttpResponse::Ok();
     /// builder.insert_header(
     ///     AcceptEncoding(vec![
-    ///         QualityItem::max(Encoding::Chunked),
-    ///         QualityItem::max(Encoding::Gzip),
-    ///         QualityItem::max(Encoding::Deflate),
-    ///     ])
-    /// );
-    /// ```
-    ///
-    /// ```
-    /// use actix_web::HttpResponse;
-    /// use actix_web::http::header::{AcceptEncoding, Encoding, QualityItem, q};
-    ///
-    /// let mut builder = HttpResponse::Ok();
-    /// builder.insert_header(
-    ///     AcceptEncoding(vec![
-    ///         QualityItem::max(Encoding::Chunked),
-    ///         QualityItem::new(Encoding::Gzip, q(0.60)),
-    ///         QualityItem::zero(Encoding::EncodingExt("*".to_owned())),
+    ///         "gzip".parse().unwrap(),
+    ///         "br".parse().unwrap(),
     ///     ])
     /// );
     /// ```
diff --git a/src/middleware/compress.rs b/src/middleware/compress.rs
index b49bc60a5..408259af1 100644
--- a/src/middleware/compress.rs
+++ b/src/middleware/compress.rs
@@ -45,7 +45,7 @@ pub struct Compress;
 impl Compress {
     /// Create new `Compress` middleware with the specified encoding.
     // TODO: remove
-    pub fn new(encoding: ContentEncoding) -> Self {
+    pub fn new(_encoding: ContentEncoding) -> Self {
         // Compress(encoding)
         Compress
     }