diff --git a/src/client/conn.rs b/src/client/conn.rs
index e136fda3..d030c27a 100644
--- a/src/client/conn.rs
+++ b/src/client/conn.rs
@@ -1,6 +1,6 @@
 //! Lower-level client connection API.
 //!
-//! The types in thie module are to provide a lower-level API based around a
+//! The types in this module are to provide a lower-level API based around a
 //! single connection. Connecting to a host, pooling connections, and the like
 //! are not handled at this level. This module provides the building blocks to
 //! customize those things externally.
@@ -177,7 +177,7 @@ where
     /// does for you that will not be done here:
     ///
     /// - `Client` requires absolute-form `Uri`s, since the scheme and
-    ///   authority are need to connect. They aren't required here.
+    ///   authority are needed to connect. They aren't required here.
     /// - Since the `Client` requires absolute-form `Uri`s, it can add
     ///   the `Host` header based on it. You must add a `Host` header yourself
     ///   before calling this method.
diff --git a/src/client/mod.rs b/src/client/mod.rs
index cc4137d2..ebc538b8 100644
--- a/src/client/mod.rs
+++ b/src/client/mod.rs
@@ -71,7 +71,7 @@
 //!
 //! // A runtime is needed to execute our asynchronous code. In order to
 //! // spawn the future into the runtime, it should already have been
-//! // started and running before calling this this code.
+//! // started and running before calling this code.
 //! rt::spawn(fut);
 //! # }
 //! # fn main () {}
diff --git a/src/proto/mod.rs b/src/proto/mod.rs
index 7cd997f8..0e0cd62c 100644
--- a/src/proto/mod.rs
+++ b/src/proto/mod.rs
@@ -35,7 +35,7 @@ pub enum BodyLength {
     Unknown,
 }
 
-/// Status of when an Disaptcher future completes.
+/// Status of when a Disaptcher future completes.
 pub(crate) enum Dispatched {
     /// Dispatcher completely shutdown connection.
     Shutdown,
diff --git a/src/server/conn.rs b/src/server/conn.rs
index fda17ab1..d66c3add 100644
--- a/src/server/conn.rs
+++ b/src/server/conn.rs
@@ -1,6 +1,6 @@
 //! Lower-level Server connection API.
 //!
-//! The types in thie module are to provide a lower-level API based around a
+//! The types in this module are to provide a lower-level API based around a
 //! single connection. Accepting a connection and binding it with a service
 //! are not handled at this level. This module provides the building blocks to
 //! customize those things externally.
@@ -48,14 +48,14 @@ pub struct Http {
     pipeline_flush: bool,
 }
 
-/// The internal mode of HTTP protocol which indicates the behavior when an parse error occurs.
+/// The internal mode of HTTP protocol which indicates the behavior when a parse error occurs.
 #[derive(Clone, Debug, PartialEq)]
 enum ConnectionMode {
-    /// Always use HTTP/1 and do not upgrade when an parse error occurs.
+    /// Always use HTTP/1 and do not upgrade when a parse error occurs.
     H1Only,
     /// Always use HTTP/2.
     H2Only,
-    /// Use HTTP/1 and try to upgrade to h2 when an parse error occurs.
+    /// Use HTTP/1 and try to upgrade to h2 when a parse error occurs.
     Fallback,
 }
 
@@ -217,7 +217,7 @@ impl Http {
 
     /// Aggregates flushes to better support pipelined responses.
     ///
-    /// Experimental, may be have bugs.
+    /// Experimental, may have bugs.
     ///
     /// Default is false.
     pub fn pipeline_flush(&mut self, enabled: bool) -> &mut Self {
diff --git a/src/service/new_service.rs b/src/service/new_service.rs
index ce90a69b..37a7dbe6 100644
--- a/src/service/new_service.rs
+++ b/src/service/new_service.rs
@@ -26,7 +26,7 @@ pub trait NewService {
     /// The future returned from `new_service` of a `Service`.
     type Future: Future<Item=Self::Service, Error=Self::InitError>;
 
-    /// The error type that can be returned when creating a new `Service.
+    /// The error type that can be returned when creating a new `Service`.
     type InitError: Into<Box<StdError + Send + Sync>>;
 
     /// Create a new `Service`.
diff --git a/src/service/service.rs b/src/service/service.rs
index a1165b2a..0f9d7e20 100644
--- a/src/service/service.rs
+++ b/src/service/service.rs
@@ -16,7 +16,7 @@ pub trait Service {
     /// The `Payload` body of the `http::Response`.
     type ResBody: Payload;
 
-    /// The error type that can occur within this `Service.
+    /// The error type that can occur within this `Service`.
     ///
     /// Note: Returning an `Error` to a hyper server will cause the connection
     /// to be abruptly aborted. In most cases, it is better to return a `Response`