diff --git a/actix-http/Cargo.toml b/actix-http/Cargo.toml
index e1aebb76b..c24878404 100644
--- a/actix-http/Cargo.toml
+++ b/actix-http/Cargo.toml
@@ -55,7 +55,6 @@ base64 = "0.13"
 bitflags = "1.2"
 bytes = "1"
 bytestring = "1"
-cfg-if = "1"
 cookie = { version = "0.14.1", features = ["percent-encode"], optional = true }
 derive_more = "0.99.5"
 encoding_rs = "0.8"
diff --git a/actix-http/src/client/connection.rs b/actix-http/src/client/connection.rs
index 78101397d..0e3e97f3f 100644
--- a/actix-http/src/client/connection.rs
+++ b/actix-http/src/client/connection.rs
@@ -174,7 +174,13 @@ impl H2ConnectionInner {
 /// Cancel spawned connection task on drop.
 impl Drop for H2ConnectionInner {
     fn drop(&mut self) {
-        self.handle.abort();
+        if self
+            .sender
+            .send_request(http::Request::new(()), true)
+            .is_err()
+        {
+            self.handle.abort();
+        }
     }
 }
 
@@ -398,9 +404,18 @@ where
 
 #[cfg(test)]
 mod test {
-    use std::net;
+    use std::{
+        future::Future,
+        net,
+        pin::Pin,
+        task::{Context, Poll},
+        time::{Duration, Instant},
+    };
 
-    use actix_rt::net::TcpStream;
+    use actix_rt::{
+        net::TcpStream,
+        time::{interval, Interval},
+    };
 
     use super::*;
 
@@ -424,9 +439,36 @@ mod test {
 
         drop(conn);
 
-        match sender.ready().await {
-            Ok(_) => panic!("connection should be gone and can not be ready"),
-            Err(e) => assert!(e.is_io()),
-        };
+        struct DropCheck {
+            sender: h2::client::SendRequest<Bytes>,
+            interval: Interval,
+            start_from: Instant,
+        }
+
+        impl Future for DropCheck {
+            type Output = ();
+
+            fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+                let this = self.get_mut();
+                match futures_core::ready!(this.sender.poll_ready(cx)) {
+                    Ok(()) => {
+                        if this.start_from.elapsed() > Duration::from_secs(10) {
+                            panic!("connection should be gone and can not be ready");
+                        } else {
+                            let _ = this.interval.poll_tick(cx);
+                            Poll::Pending
+                        }
+                    }
+                    Err(_) => Poll::Ready(()),
+                }
+            }
+        }
+
+        DropCheck {
+            sender,
+            interval: interval(Duration::from_millis(100)),
+            start_from: Instant::now(),
+        }
+        .await;
     }
 }
diff --git a/awc/CHANGES.md b/awc/CHANGES.md
index 9e5af67c1..b745e9868 100644
--- a/awc/CHANGES.md
+++ b/awc/CHANGES.md
@@ -5,10 +5,12 @@
 * Add `Client::headers` to get default mut reference of `HeaderMap` of client object. [#2114]
 
 ### Changed
-* `ConnectorService` type is renamed to `BoxConnectorService` [#2081]
+* `ConnectorService` type is renamed to `BoxConnectorService`. [#2081]
+* Fix http/https encoding when enabling `compress` feature. [#2116]
 
 [#2081]: https://github.com/actix/actix-web/pull/2081
 [#2114]: https://github.com/actix/actix-web/pull/2114
+[#2116]: https://github.com/actix/actix-web/pull/2116
 
 
 ## 3.0.0-beta.3 - 2021-03-08
diff --git a/awc/Cargo.toml b/awc/Cargo.toml
index ec2e03a96..b555ebb22 100644
--- a/awc/Cargo.toml
+++ b/awc/Cargo.toml
@@ -51,7 +51,6 @@ actix-rt = { version = "2.1", default-features = false }
 
 base64 = "0.13"
 bytes = "1"
-cfg-if = "1.0"
 derive_more = "0.99.5"
 futures-core = { version = "0.3.7", default-features = false }
 itoa = "0.4"
diff --git a/awc/src/request.rs b/awc/src/request.rs
index a847b09a3..8b896a00d 100644
--- a/awc/src/request.rs
+++ b/awc/src/request.rs
@@ -21,15 +21,10 @@ use crate::frozen::FrozenClientRequest;
 use crate::sender::{PrepForSendingError, RequestSender, SendClientRequest};
 use crate::ClientConfig;
 
-cfg_if::cfg_if! {
-    if #[cfg(any(feature = "flate2-zlib", feature = "flate2-rust"))] {
-        const HTTPS_ENCODING: &str = "br, gzip, deflate";
-    } else if #[cfg(feature = "compress")] {
-        const HTTPS_ENCODING: &str = "br";
-    } else {
-        const HTTPS_ENCODING: &str = "identity";
-    }
-}
+#[cfg(feature = "compress")]
+const HTTPS_ENCODING: &str = "br, gzip, deflate";
+#[cfg(not(feature = "compress"))]
+const HTTPS_ENCODING: &str = "br";
 
 /// An HTTP Client request builder
 ///
@@ -521,11 +516,11 @@ impl ClientRequest {
                 .unwrap_or(true);
 
             if https {
-                slf = slf.insert_header_if_none((header::ACCEPT_ENCODING, HTTPS_ENCODING))
+                slf = slf.insert_header_if_none((header::ACCEPT_ENCODING, HTTPS_ENCODING));
             } else {
-                #[cfg(any(feature = "flate2-zlib", feature = "flate2-rust"))]
+                #[cfg(feature = "compress")]
                 {
-                    slf = slf.insert_header_if_none((header::ACCEPT_ENCODING, "gzip, deflate"))
+                    slf = slf.insert_header_if_none((header::ACCEPT_ENCODING, "gzip, deflate"));
                 }
             };
         }