diff --git a/chatterino.pro b/chatterino.pro
index b972b2f2d..4f64107f2 100644
--- a/chatterino.pro
+++ b/chatterino.pro
@@ -114,7 +114,6 @@ SOURCES += \
     src/singletons/accountmanager.cpp \
     src/singletons/channelmanager.cpp \
     src/singletons/commandmanager.cpp \
-    src/singletons/completionmanager.cpp \
     src/singletons/emotemanager.cpp \
     src/singletons/fontmanager.cpp \
     src/singletons/helper/completionmodel.cpp \
@@ -208,7 +207,6 @@ HEADERS  += \
     src/singletons/accountmanager.hpp \
     src/singletons/channelmanager.hpp \
     src/singletons/commandmanager.hpp \
-    src/singletons/completionmanager.hpp \
     src/singletons/emotemanager.hpp \
     src/singletons/fontmanager.hpp \
     src/singletons/helper/chatterinosetting.hpp \
diff --git a/src/channel.cpp b/src/channel.cpp
index 58a65d9a3..08265f395 100644
--- a/src/channel.cpp
+++ b/src/channel.cpp
@@ -20,6 +20,7 @@ namespace chatterino {
 
 Channel::Channel(const QString &_name)
     : name(_name)
+    , completionModel(this->name)
 {
 }
 
diff --git a/src/channel.hpp b/src/channel.hpp
index 1b06f4bf2..dd520f734 100644
--- a/src/channel.hpp
+++ b/src/channel.hpp
@@ -3,6 +3,7 @@
 #include "messages/image.hpp"
 #include "messages/limitedqueue.hpp"
 #include "messages/message.hpp"
+#include "singletons/helper/completionmodel.hpp"
 #include "util/concurrentmap.hpp"
 
 #include <QMap>
@@ -64,6 +65,8 @@ public:
 
     static std::shared_ptr<Channel> getEmpty();
 
+    singletons::CompletionModel completionModel;
+
 protected:
     virtual void onConnected();
 
diff --git a/src/providers/twitch/twitchchannel.cpp b/src/providers/twitch/twitchchannel.cpp
index 281f92ebc..adb7cfe32 100644
--- a/src/providers/twitch/twitchchannel.cpp
+++ b/src/providers/twitch/twitchchannel.cpp
@@ -16,6 +16,7 @@
 namespace chatterino {
 namespace providers {
 namespace twitch {
+
 TwitchChannel::TwitchChannel(const QString &channelName, Communi::IrcConnection *_readConnection)
     : Channel(channelName)
     , bttvChannelEmotes(new util::EmoteMap)
@@ -47,6 +48,27 @@ TwitchChannel::TwitchChannel(const QString &channelName, Communi::IrcConnection
 
     this->messageSuffix.append(' ');
     this->messageSuffix.append(QChar(0x206D));
+
+    static QStringList jsonLabels = {"moderators", "staff", "admins", "global_mods", "viewers"};
+    auto refreshChatters = [=](QJsonObject obj) {
+        QJsonObject chattersObj = obj.value("chatters").toObject();
+        for (int i = 0; i < jsonLabels.size(); i++) {
+            foreach (const QJsonValue &v, chattersObj.value(jsonLabels.at(i)).toArray()) {
+                this->completionModel.addUser(v.toString());
+            }
+        }
+    };
+
+    auto doRefreshChatters = [=]() {
+        util::twitch::get("https://tmi.twitch.tv/group/user/" + this->name + "/chatters",
+                          QThread::currentThread(), refreshChatters);
+    };
+
+    doRefreshChatters();
+
+    this->chattersListTimer = new QTimer;
+    QObject::connect(this->chattersListTimer, &QTimer::timeout, doRefreshChatters);
+    this->chattersListTimer->start(5 * 60 * 1000);
 }
 
 TwitchChannel::~TwitchChannel()
@@ -55,6 +77,9 @@ TwitchChannel::~TwitchChannel()
 
     this->liveStatusTimer->stop();
     this->liveStatusTimer->deleteLater();
+
+    this->chattersListTimer->stop();
+    this->chattersListTimer->deleteLater();
 }
 
 bool TwitchChannel::isEmpty() const
@@ -104,7 +129,7 @@ void TwitchChannel::sendMessage(const QString &message)
             parsedMessage.append(this->messageSuffix);
 
             this->lastSentMessage = "";
-        }     
+        }
     }
 
     this->lastSentMessage = parsedMessage;
diff --git a/src/providers/twitch/twitchchannel.hpp b/src/providers/twitch/twitchchannel.hpp
index 90d077a70..c0aba110b 100644
--- a/src/providers/twitch/twitchchannel.hpp
+++ b/src/providers/twitch/twitchchannel.hpp
@@ -11,10 +11,13 @@
 namespace chatterino {
 namespace providers {
 namespace twitch {
+
 class TwitchServer;
+
 class TwitchChannel final : public Channel
 {
     QTimer *liveStatusTimer;
+    QTimer *chattersListTimer;
 
 public:
     ~TwitchChannel();
@@ -69,6 +72,7 @@ private:
 
     friend class TwitchServer;
 };
+
 }  // namespace twitch
 }  // namespace providers
 }  // namespace chatterino
diff --git a/src/providers/twitch/twitchserver.cpp b/src/providers/twitch/twitchserver.cpp
index 8db98dd0b..c45b5193a 100644
--- a/src/providers/twitch/twitchserver.cpp
+++ b/src/providers/twitch/twitchserver.cpp
@@ -5,7 +5,6 @@
 #include "providers/twitch/twitchmessagebuilder.hpp"
 #include "singletons/accountmanager.hpp"
 #include "util/posttothread.hpp"
-#include "singletons/completionmanager.hpp"
 
 #include <cassert>
 
@@ -84,8 +83,8 @@ void TwitchServer::privateMessageReceived(IrcPrivateMessage *message)
 
     TwitchMessageBuilder builder(chan.get(), message, args);
 
-    auto cm = singletons::CompletionManager::getInstance().createModel(chan->name);
-    cm->addUser(message->nick());
+    // XXX: Thread-safety
+    chan->completionModel.addUser(message->nick());
 
     if (!builder.isIgnored()) {
         messages::MessagePtr _message = builder.build();
diff --git a/src/singletons/completionmanager.cpp b/src/singletons/completionmanager.cpp
deleted file mode 100644
index bb7326eae..000000000
--- a/src/singletons/completionmanager.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-#include "singletons/completionmanager.hpp"
-#include "common.hpp"
-#include "debug/log.hpp"
-#include "singletons/channelmanager.hpp"
-#include "singletons/emotemanager.hpp"
-
-namespace chatterino {
-namespace singletons {
-
-CompletionManager &CompletionManager::getInstance()
-{
-    static CompletionManager instance;
-    return instance;
-}
-
-CompletionModel *CompletionManager::createModel(const QString &channelName)
-{
-    auto it = this->models.find(channelName);
-    if (it != this->models.end()) {
-        return it->second;
-    }
-
-    CompletionModel *ret = new CompletionModel(channelName);
-    this->models[channelName] = ret;
-
-    return ret;
-}
-
-}  // namespace singletons
-}  // namespace chatterino
diff --git a/src/singletons/completionmanager.hpp b/src/singletons/completionmanager.hpp
deleted file mode 100644
index 3efd7b828..000000000
--- a/src/singletons/completionmanager.hpp
+++ /dev/null
@@ -1,26 +0,0 @@
-#pragma once
-
-#include <QAbstractListModel>
-#include <QVector>
-#include <map>
-#include <string>
-
-#include "helper/completionmodel.hpp"
-
-namespace chatterino {
-namespace singletons {
-class CompletionManager
-{
-    CompletionManager() = default;
-
-public:
-    static CompletionManager &getInstance();
-
-    CompletionModel *createModel(const QString &channelName);
-
-private:
-    std::map<QString, CompletionModel *> models;
-};
-
-}  // namespace singletons
-}  // namespace chatterino
diff --git a/src/singletons/helper/completionmodel.cpp b/src/singletons/helper/completionmodel.cpp
index 9c6c3df1a..02c3be467 100644
--- a/src/singletons/helper/completionmodel.cpp
+++ b/src/singletons/helper/completionmodel.cpp
@@ -3,13 +3,13 @@
 #include "common.hpp"
 #include "debug/log.hpp"
 #include "singletons/channelmanager.hpp"
-#include "singletons/completionmanager.hpp"
 #include "singletons/emotemanager.hpp"
 
 #include <QtAlgorithms>
 
 namespace chatterino {
 namespace singletons {
+
 CompletionModel::CompletionModel(const QString &_channelName)
     : channelName(_channelName)
 {
@@ -94,5 +94,6 @@ void CompletionModel::addUser(const QString &str)
     // Always add a space at the end of completions
     this->emotes.insert(this->createUser(str + " "));
 }
+
 }  // namespace singletons
 }  // namespace chatterino
diff --git a/src/singletons/helper/completionmodel.hpp b/src/singletons/helper/completionmodel.hpp
index 5d156970c..6c7bef633 100644
--- a/src/singletons/helper/completionmodel.hpp
+++ b/src/singletons/helper/completionmodel.hpp
@@ -1,15 +1,16 @@
 #pragma once
 
-#include <QAbstractListModel>
-#include <set>
-
-#include <map>
-#include <string>
-
 #include "common.hpp"
 
+#include <QAbstractListModel>
+
+#include <map>
+#include <set>
+#include <string>
+
 namespace chatterino {
 namespace singletons {
+
 class CompletionModel : public QAbstractListModel
 {
 public:
@@ -50,17 +51,23 @@ private:
             if (this->isEmote) {
                 if (that.isEmote) {
                     int k = QString::compare(this->str, that.str, Qt::CaseInsensitive);
-                    if (k == 0) return this->str > that.str;
-                    else return k < 0;
+                    if (k == 0) {
+                        return this->str > that.str;
+                    } else {
+                        return k < 0;
+                    }
                 } else
                     return true;
             } else {
                 if (that.isEmote)
                     return false;
                 else {
-                    int k = QString::compare(this->str, that.str, Qt::CaseInsensitive);;
-                    if (k == 0) return this->str > that.str;
-                    else return k < 0;
+                    int k = QString::compare(this->str, that.str, Qt::CaseInsensitive);
+                    if (k == 0) {
+                        return this->str > that.str;
+                    } else {
+                        return k < 0;
+                    }
                 }
             }
         }
@@ -81,5 +88,6 @@ private:
 
     QString channelName;
 };
+
 }  // namespace singletons
 }  // namespace chatterino
diff --git a/src/widgets/helper/resizingtextedit.cpp b/src/widgets/helper/resizingtextedit.cpp
index 28db51819..89a55fdcb 100644
--- a/src/widgets/helper/resizingtextedit.cpp
+++ b/src/widgets/helper/resizingtextedit.cpp
@@ -1,6 +1,6 @@
 #include "widgets/helper/resizingtextedit.hpp"
 #include "common.hpp"
-#include "singletons/completionmanager.hpp"
+#include "singletons/helper/completionmodel.hpp"
 
 ResizingTextEdit::ResizingTextEdit()
 {
diff --git a/src/widgets/helper/splitinput.cpp b/src/widgets/helper/splitinput.cpp
index e723aff2e..18ddb6528 100644
--- a/src/widgets/helper/splitinput.cpp
+++ b/src/widgets/helper/splitinput.cpp
@@ -1,14 +1,13 @@
 #include "widgets/helper/splitinput.hpp"
 #include "singletons/commandmanager.hpp"
-#include "singletons/completionmanager.hpp"
 #include "singletons/ircmanager.hpp"
 #include "singletons/settingsmanager.hpp"
 #include "singletons/thememanager.hpp"
 #include "util/layoutcreator.hpp"
+#include "util/urlfetch.hpp"
 #include "widgets/notebook.hpp"
 #include "widgets/split.hpp"
 #include "widgets/splitcontainer.hpp"
-#include "util/urlfetch.hpp"
 
 #include <QCompleter>
 #include <QPainter>
@@ -22,26 +21,14 @@ SplitInput::SplitInput(Split *_chatWidget)
 {
     this->initLayout();
 
-    // auto completion
-    auto completer = new QCompleter(
-        singletons::CompletionManager::getInstance().createModel(this->chatWidget->channelName));
-    auto cc = singletons::CompletionManager::getInstance().createModel(this->chatWidget->channelName);
-    cc->refresh();
-
-
-    static QStringList jsonLabels = {"moderators", "staff", "admins", "global_mods", "viewers"};
-    util::twitch::get("https://tmi.twitch.tv/group/user/" + this->chatWidget->channelName + "/chatters", this,
-                      [cc](QJsonObject obj) {
-                          QJsonObject chattersObj = obj.value("chatters").toObject();
-                          for (int i = 0; i < jsonLabels.size(); i++) {
-                              foreach (const QJsonValue &v,
-                                       chattersObj.value(jsonLabels.at(i)).toArray())
-                                  cc->addUser(v.toString());
-                          }
-                      });
-
+    auto completer = new QCompleter(&this->chatWidget->getChannel()->completionModel);
     this->ui.textEdit->setCompleter(completer);
 
+    this->chatWidget->channelChanged.connect([this] {
+        auto completer = new QCompleter(&this->chatWidget->getChannel()->completionModel);
+        this->ui.textEdit->setCompleter(completer);
+    });
+
     // misc
     this->installKeyPressedEvent();
     this->themeRefreshEvent();