diff --git a/channel.go b/channel.go
index a61a358..212044b 100644
--- a/channel.go
+++ b/channel.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"math/rand"
 	"strconv"
+	"strings"
 	"sync/atomic"
 	"time"
 
@@ -21,8 +22,10 @@ type Channel struct {
 }
 
 var (
-	_ cchat.Server        = (*Channel)(nil)
-	_ cchat.ServerMessage = (*Channel)(nil)
+	_ cchat.Server                     = (*Channel)(nil)
+	_ cchat.ServerMessage              = (*Channel)(nil)
+	_ cchat.ServerMessageSender        = (*Channel)(nil)
+	_ cchat.ServerMessageSendCompleter = (*Channel)(nil)
 )
 
 func (ch *Channel) ID() string {
@@ -75,6 +78,18 @@ func (ch *Channel) SendMessage(msg cchat.SendableMessage) error {
 	return nil
 }
 
+func (ch *Channel) CompleteMessage(words []string, i int) []string {
+	switch {
+	case strings.HasPrefix("complete", words[i]):
+		words[i] = "complete"
+	case strings.HasPrefix("me", words[i]) && i > 0 && words[i-1] == "complete":
+		words[i] = "me"
+	default:
+		return nil
+	}
+	return words
+}
+
 func generateChannels(s *Service, amount int) []cchat.Server {
 	var channels = make([]cchat.Server, amount)
 	for i := range channels {
diff --git a/go.mod b/go.mod
index f22271a..2c94056 100644
--- a/go.mod
+++ b/go.mod
@@ -4,5 +4,5 @@ go 1.14
 
 require (
 	github.com/Pallinder/go-randomdata v1.2.0
-	github.com/diamondburned/cchat v0.0.4
+	github.com/diamondburned/cchat v0.0.5
 )
diff --git a/go.sum b/go.sum
index a49ba50..f56b7f3 100644
--- a/go.sum
+++ b/go.sum
@@ -8,3 +8,5 @@ github.com/diamondburned/cchat v0.0.3 h1:XpuRcs+RhdFOGfsD3uCporEhVo8HQ5s95Qlj+4U
 github.com/diamondburned/cchat v0.0.3/go.mod h1:2MdhWABRer4WhwcuLR0b2VY5S22Y1zDTpFqriAFrC08=
 github.com/diamondburned/cchat v0.0.4 h1:RSuAX3T4PsPOPBDNZMTt6Mr+g1UZQ3A7vSBf9QPS7uQ=
 github.com/diamondburned/cchat v0.0.4/go.mod h1:2MdhWABRer4WhwcuLR0b2VY5S22Y1zDTpFqriAFrC08=
+github.com/diamondburned/cchat v0.0.5 h1:g0+569jnFqx4euNsqjurqjAY+xxG5n8kmGnDRwA8qFs=
+github.com/diamondburned/cchat v0.0.5/go.mod h1:2MdhWABRer4WhwcuLR0b2VY5S22Y1zDTpFqriAFrC08=