diff --git a/actix-http/CHANGES.md b/actix-http/CHANGES.md
index 3024703de..94ea543b1 100644
--- a/actix-http/CHANGES.md
+++ b/actix-http/CHANGES.md
@@ -2,6 +2,10 @@
 
 ## [0.2.8] - 2019-07-xx
 
+### Changed
+
+* Add `Clone` impl for `HeaderMap`
+
 ### Fixed
 
 * awc client panic #1016
diff --git a/actix-http/src/error.rs b/actix-http/src/error.rs
index cbb009a72..dcbc3cc93 100644
--- a/actix-http/src/error.rs
+++ b/actix-http/src/error.rs
@@ -89,11 +89,11 @@ pub trait ResponseError: fmt::Debug + fmt::Display {
     }
 }
 
-impl ResponseError + 'static {
+impl dyn ResponseError + 'static {
     /// Downcasts a response error to a specific type.
     pub fn downcast_ref<T: ResponseError + 'static>(&self) -> Option<&T> {
         if self.__private_get_type_id__() == TypeId::of::<T>() {
-            unsafe { Some(&*(self as *const ResponseError as *const T)) }
+            unsafe { Some(&*(self as *const dyn ResponseError as *const T)) }
         } else {
             None
         }
diff --git a/actix-http/src/header/map.rs b/actix-http/src/header/map.rs
index 694aed02a..f2f1ba51c 100644
--- a/actix-http/src/header/map.rs
+++ b/actix-http/src/header/map.rs
@@ -9,12 +9,12 @@ use http::HttpTryFrom;
 /// `HeaderMap` is an multimap of [`HeaderName`] to values.
 ///
 /// [`HeaderName`]: struct.HeaderName.html
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct HeaderMap {
     pub(crate) inner: HashMap<HeaderName, Value>,
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub(crate) enum Value {
     One(HeaderValue),
     Multi(Vec<HeaderValue>),
diff --git a/src/config.rs b/src/config.rs
index bbbb3bb01..63fd31d27 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -133,7 +133,7 @@ impl AppConfig {
 
     /// Set server host name.
     ///
-    /// Host name is used by application router aa a hostname for url
+    /// Host name is used by application router as a hostname for url
     /// generation. Check [ConnectionInfo](./dev/struct.ConnectionInfo.
     /// html#method.host) documentation for more information.
     ///
diff --git a/src/server.rs b/src/server.rs
index aa654e576..d1a019a19 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -180,7 +180,7 @@ where
 
     /// Set server host name.
     ///
-    /// Host name is used by application router aa a hostname for url
+    /// Host name is used by application router as a hostname for url
     /// generation. Check [ConnectionInfo](./dev/struct.ConnectionInfo.
     /// html#method.host) documentation for more information.
     pub fn server_hostname<T: AsRef<str>>(mut self, val: T) -> Self {