diff --git a/guide/src/qs_7.md b/guide/src/qs_7.md
index abad8dfe..356c1d81 100644
--- a/guide/src/qs_7.md
+++ b/guide/src/qs_7.md
@@ -3,7 +3,7 @@
 ## Content encoding
 
 Actix automatically *compress*/*decompress* payload. 
-Following encodings are supported: 
+Following codecs are supported: 
 
  * Brotli
  * Gzip
@@ -13,17 +13,23 @@ Following encodings are supported:
  If request headers contains `Content-Encoding` header, request payload get decompressed
  according to header value. Multiple codecs are not supported, i.e: `Content-Encoding: br, gzip`.
  
-Response payload get compressed based on `content_encoding` settings. 
-If `ContentEncoding::Auto` is selected then compression depends on request's
-`Accept-Encoding` header. `ContentEncoding::Identity` could be used to disable compression.
-If other content encoding is selected the compression is enforced.
+Response payload get compressed based on *content_encoding* parameter. 
+By default `ContentEncoding::Auto` is used. If `ContentEncoding::Auto` is selected
+then compression depends on request's `Accept-Encoding` header. 
+`ContentEncoding::Identity` could be used to disable compression.
+If other content encoding is selected the compression is enforced for this codec. For example,
+to enable `brotli` response's body compression use `ContentEncoding::Br`:
+
+```rust
+extern crate actix_web;
+use actix_web::*;
 
-```rust,ignore
 fn index(req: HttpRequest) -> HttpResponse {
     HttpResponse::Ok()
         .content_encoding(ContentEncoding::Br)
-        .body(Body)
+        .body("data").unwrap()
 }
+# fn main() {}
 ```
  
 ## JSON Response
diff --git a/src/httpresponse.rs b/src/httpresponse.rs
index da26c678..ef757e1a 100644
--- a/src/httpresponse.rs
+++ b/src/httpresponse.rs
@@ -1,5 +1,5 @@
 //! Pieces pertaining to the HTTP response.
-use std::{io, mem, str, fmt};
+use std::{mem, str, fmt};
 use std::convert::Into;
 
 use cookie::CookieJar;
@@ -157,17 +157,6 @@ impl HttpResponse {
         self.chunked
     }
 
-    /// Enables automatic chunked transfer encoding
-    pub fn enable_chunked_encoding(&mut self) -> Result<(), io::Error> {
-        if self.headers.contains_key(header::CONTENT_LENGTH) {
-            Err(io::Error::new(io::ErrorKind::Other,
-                "You can't enable chunked encoding when a content length is set"))
-        } else {
-            self.chunked = true;
-            Ok(())
-        }
-    }
-
     /// Content encoding
     pub fn content_encoding(&self) -> &ContentEncoding {
         &self.encoding
@@ -597,6 +586,7 @@ mod tests {
     fn test_basic_builder() {
         let resp = HttpResponse::Ok()
             .status(StatusCode::NO_CONTENT)
+            .header("X-TEST", "value")
             .version(Version::HTTP_10)
             .finish().unwrap();
         assert_eq!(resp.version(), Some(Version::HTTP_10));