diff --git a/qt5/dbusaddons/fcitxqtdbustypes.h b/qt5/dbusaddons/fcitxqtdbustypes.h
index 1024b91..c88b3a9 100644
--- a/qt5/dbusaddons/fcitxqtdbustypes.h
+++ b/qt5/dbusaddons/fcitxqtdbustypes.h
@@ -11,8 +11,6 @@
 #include "fcitx5qt5dbusaddons_export.h"
 
 #include <QDBusArgument>
-#include <QList>
-#include <QMetaType>
 #include <type_traits>
 
 namespace fcitx {
diff --git a/qt5/dbusaddons/fcitxqtinputcontextproxy.cpp b/qt5/dbusaddons/fcitxqtinputcontextproxy.cpp
index 3cb2843..876f3e9 100644
--- a/qt5/dbusaddons/fcitxqtinputcontextproxy.cpp
+++ b/qt5/dbusaddons/fcitxqtinputcontextproxy.cpp
@@ -6,12 +6,6 @@
  */
 
 #include "fcitxqtinputcontextproxy_p.h"
-#include <QCoreApplication>
-#include <QDBusConnectionInterface>
-#include <QDBusInterface>
-#include <QDBusMetaType>
-#include <QFileInfo>
-#include <QTimer>
 
 namespace fcitx {
 
diff --git a/qt5/dbusaddons/fcitxqtinputcontextproxy.h b/qt5/dbusaddons/fcitxqtinputcontextproxy.h
index 4488a6c..b0b9c4a 100644
--- a/qt5/dbusaddons/fcitxqtinputcontextproxy.h
+++ b/qt5/dbusaddons/fcitxqtinputcontextproxy.h
@@ -10,12 +10,8 @@
 #include "fcitx5qt5dbusaddons_export.h"
 
 #include "fcitxqtdbustypes.h"
-#include <QDBusConnection>
 #include <QDBusPendingReply>
-#include <QDBusServiceWatcher>
-#include <QObject>
 
-class QDBusPendingCallWatcher;
 
 namespace fcitx {
 
diff --git a/qt5/dbusaddons/fcitxqtwatcher.cpp b/qt5/dbusaddons/fcitxqtwatcher.cpp
index 1084668..60bc170 100644
--- a/qt5/dbusaddons/fcitxqtwatcher.cpp
+++ b/qt5/dbusaddons/fcitxqtwatcher.cpp
@@ -6,9 +6,7 @@
  */
 
 #include "fcitxqtwatcher_p.h"
-#include <QDBusConnection>
 #include <QDBusConnectionInterface>
-#include <QDBusServiceWatcher>
 
 namespace fcitx {
 
diff --git a/qt5/platforminputcontext/fcitx4watcher.h b/qt5/platforminputcontext/fcitx4watcher.h
index 2ff9885..8d39d5d 100644
--- a/qt5/platforminputcontext/fcitx4watcher.h
+++ b/qt5/platforminputcontext/fcitx4watcher.h
@@ -11,7 +11,6 @@
 #include <QDBusConnection>
 #include <QObject>
 
-class QDBusConnection;
 class QFileSystemWatcher;
 class QDBusServiceWatcher;