diff --git a/async_ex1/src/main.rs b/async_ex1/src/main.rs
index dda193f9..95e02fc6 100644
--- a/async_ex1/src/main.rs
+++ b/async_ex1/src/main.rs
@@ -70,7 +70,7 @@ fn step_x_v1(data: SomeData) -> Box<Future<Item = SomeData, Error = Error>> {
             .map_err(Error::from)   // <- convert SendRequestError to an Error
             .and_then(
                 |resp| resp.body()         // <- this is MessageBody type, resolves to complete body
-                    .from_err()            // <- convert PayloadError to a Error
+                    .from_err()            // <- convert PayloadError to an Error
                     .and_then(|body| {
                         let resp: HttpBinResponse = serde_json::from_slice(&body).unwrap();
                         fut_ok(resp.json)
@@ -109,7 +109,7 @@ fn step_x_v2(data: SomeData) -> impl Future<Item = SomeData, Error = Error> {
         .map_err(Error::from)   // <- convert SendRequestError to an Error
         .and_then(
             |resp| resp.body()         // <- this is MessageBody type, resolves to complete body
-                .from_err()            // <- convert PayloadError to a Error
+                .from_err()            // <- convert PayloadError to an Error
                 .and_then(|body| {
                     let resp: HttpBinResponse = serde_json::from_slice(&body).unwrap();
                     fut_ok(resp.json)
diff --git a/http-proxy/src/main.rs b/http-proxy/src/main.rs
index 64adfbcf..2e750870 100644
--- a/http-proxy/src/main.rs
+++ b/http-proxy/src/main.rs
@@ -17,7 +17,7 @@ fn index(_req: HttpRequest) -> Box<Future<Item = HttpResponse, Error = Error>> {
         .map_err(Error::from)          // <- convert SendRequestError to an Error
         .and_then(
             |resp| resp.body()         // <- this is MessageBody type, resolves to complete body
-                .from_err()            // <- convert PayloadError to a Error
+                .from_err()            // <- convert PayloadError to an Error
                 .and_then(|body| {     // <- we got complete body, now send as server response
                     Ok(HttpResponse::Ok().body(body))
                 }))
@@ -34,7 +34,7 @@ fn streaming(_req: HttpRequest) -> Box<Future<Item = HttpResponse, Error = Error
         .and_then(|resp| {              // <- we received client response
             Ok(HttpResponse::Ok()
                // read one chunk from client response and send this chunk to a server response
-               // .from_err() converts PayloadError to a Error
+               // .from_err() converts PayloadError to an Error
                .body(Body::Streaming(Box::new(resp.from_err()))))
         })
         .responder()