diff --git a/cli/command/service/helpers.go b/cli/command/service/helpers.go
index 50aee7c88f..2e893f96e1 100644
--- a/cli/command/service/helpers.go
+++ b/cli/command/service/helpers.go
@@ -2,6 +2,7 @@ package service
 
 import (
 	"io"
+	"io/ioutil"
 
 	"github.com/docker/cli/cli/command"
 	"github.com/docker/cli/cli/command/service/progress"
@@ -20,14 +21,7 @@ func waitOnService(ctx context.Context, dockerCli *command.DockerCli, serviceID
 	}()
 
 	if opts.quiet {
-		go func() {
-			for {
-				var buf [1024]byte
-				if _, err := pipeReader.Read(buf[:]); err != nil {
-					return
-				}
-			}
-		}()
+		go io.Copy(ioutil.Discard, pipeReader)
 		return <-errChan
 	}
 
diff --git a/cli/command/swarm/ca.go b/cli/command/swarm/ca.go
index 0814a53950..fab0929b64 100644
--- a/cli/command/swarm/ca.go
+++ b/cli/command/swarm/ca.go
@@ -102,13 +102,7 @@ func runRotateCA(dockerCli command.Cli, flags *pflag.FlagSet, opts caOptions) er
 	}()
 
 	if opts.quiet {
-		go func() {
-			for {
-				if _, err := io.Copy(ioutil.Discard, pipeReader); err != nil {
-					return
-				}
-			}
-		}()
+		go io.Copy(ioutil.Discard, pipeReader)
 		return <-errChan
 	}