diff --git a/src/client.rs b/src/client.rs
index 411fada..6cd3985 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -1326,10 +1326,7 @@ impl<T: Read + Write + Unpin + fmt::Debug + Send> Session<T> {
     }
 
     /// Runs `COMPRESS DEFLATE` command.
-    ///
-    /// Returns `Result` which is `Ok` if the stream is now compressed
-    /// and `Err` if compression was not enabled.
-    pub async fn compress<F, S>(self, f: F) -> Result<std::result::Result<Session<S>, Session<T>>>
+    pub async fn compress<F, S>(self, f: F) -> Result<Session<S>>
     where
         S: Read + Write + Unpin + fmt::Debug,
         F: FnOnce(DeflateStream<T>) -> S,
@@ -1341,34 +1338,20 @@ impl<T: Read + Write + Unpin + fmt::Debug + Send> Session<T> {
         } = self;
         conn.run_command_and_check_ok("COMPRESS DEFLATE", Some(unsolicited_responses_tx.clone()))
             .await?;
-        let stream = conn.into_inner();
 
-        if true {
-            let deflate_stream = DeflateStream::new(stream);
-            let stream = ImapStream::new(f(deflate_stream));
-            let conn = Connection {
-                stream,
-                request_ids: IdGenerator::new(),
-            };
-            let session = Session {
-                conn,
-                unsolicited_responses_tx,
-                unsolicited_responses,
-            };
-            Ok(Ok(session))
-        } else {
-            let stream = ImapStream::new(stream);
-            let conn = Connection {
-                stream,
-                request_ids: IdGenerator::new(),
-            };
-            let session = Self {
-                conn,
-                unsolicited_responses_tx,
-                unsolicited_responses,
-            };
-            Ok(Err(session))
-        }
+        let stream = conn.into_inner();
+        let deflate_stream = DeflateStream::new(stream);
+        let stream = ImapStream::new(f(deflate_stream));
+        let conn = Connection {
+            stream,
+            request_ids: IdGenerator::new(),
+        };
+        let session = Session {
+            conn,
+            unsolicited_responses_tx,
+            unsolicited_responses,
+        };
+        Ok(session)
     }
 
     // these are only here because they are public interface, the rest is in `Connection`