diff --git a/actix-server/src/accept.rs b/actix-server/src/accept.rs
index bf895f06..5c434709 100644
--- a/actix-server/src/accept.rs
+++ b/actix-server/src/accept.rs
@@ -401,7 +401,7 @@ impl Accept {
 
                         // after the sleep a Timer interest is sent to Accept Poll
                         let waker = self.waker.clone();
-                        System::current().arbiter().send(Box::pin(async move {
+                        System::current().arbiter().spawn(Box::pin(async move {
                             sleep_until(Instant::now() + Duration::from_millis(510)).await;
                             waker.wake(WakerInterest::Timer);
                         }));
diff --git a/actix-server/src/builder.rs b/actix-server/src/builder.rs
index 08ab2d09..a78e4175 100644
--- a/actix-server/src/builder.rs
+++ b/actix-server/src/builder.rs
@@ -6,7 +6,7 @@ use std::{io, mem};
 
 use actix_rt::net::TcpStream;
 use actix_rt::time::{sleep_until, Instant};
-use actix_rt::{spawn, System};
+use actix_rt::{self as rt, System};
 use log::{error, info};
 use tokio::sync::mpsc::{unbounded_channel, UnboundedReceiver};
 use tokio::sync::oneshot;
@@ -288,7 +288,7 @@ impl ServerBuilder {
 
             // start http server actor
             let server = self.server.clone();
-            spawn(self);
+            rt::spawn(self);
             server
         }
     }
@@ -364,7 +364,7 @@ impl ServerBuilder {
 
                     let fut = join_all(iter);
 
-                    spawn(async move {
+                    rt::spawn(async move {
                         let _ = fut.await;
                         if let Some(tx) = completion {
                             let _ = tx.send(());
@@ -373,16 +373,16 @@ impl ServerBuilder {
                             let _ = tx.send(());
                         }
                         if exit {
-                            spawn(async {
+                            rt::spawn(async {
                                 sleep_until(Instant::now() + Duration::from_millis(300)).await;
                                 System::current().stop();
                             });
                         }
-                    })
+                    });
                 } else {
                     // we need to stop system if server was spawned
                     if self.exit {
-                        spawn(async {
+                        rt::spawn(async {
                             sleep_until(Instant::now() + Duration::from_millis(300)).await;
                             System::current().stop();
                         });
diff --git a/actix-server/src/worker.rs b/actix-server/src/worker.rs
index 91e98fc2..d54a0829 100644
--- a/actix-server/src/worker.rs
+++ b/actix-server/src/worker.rs
@@ -172,7 +172,7 @@ impl Worker {
         let avail = availability.clone();
 
         // every worker runs in it's own arbiter.
-        Arbiter::new().send(Box::pin(async move {
+        Arbiter::new().spawn(Box::pin(async move {
             availability.set(false);
             let mut wrk = MAX_CONNS_COUNTER.with(move |conns| Worker {
                 rx,