diff --git a/src/controllers/dlgprefcontroller.h b/src/controllers/dlgprefcontroller.h
index 8b4ab0e7922c..e04e377a7622 100644
--- a/src/controllers/dlgprefcontroller.h
+++ b/src/controllers/dlgprefcontroller.h
@@ -2,6 +2,7 @@
 
 #include <QHash>
 #include <QSortFilterProxyModel>
+#include <memory>
 
 #include "controllers/controllerinputmappingtablemodel.h"
 #include "controllers/controlleroutputmappingtablemodel.h"
@@ -9,8 +10,8 @@
 #include "controllers/controllerpresetinfo.h"
 #include "controllers/dlgcontrollerlearning.h"
 #include "controllers/ui_dlgprefcontrollerdlg.h"
-#include "preferences/usersettings.h"
 #include "preferences/dlgpreferencepage.h"
+#include "preferences/usersettings.h"
 
 // Forward declarations
 class Controller;
diff --git a/src/controllers/dlgprefcontrollers.h b/src/controllers/dlgprefcontrollers.h
index 8a74add548f4..3242a4104b28 100644
--- a/src/controllers/dlgprefcontrollers.h
+++ b/src/controllers/dlgprefcontrollers.h
@@ -1,10 +1,11 @@
 #pragma once
 
 #include <QTreeWidgetItem>
+#include <memory>
 
-#include "preferences/usersettings.h"
 #include "controllers/ui_dlgprefcontrollersdlg.h"
 #include "preferences/dlgpreferencepage.h"
+#include "preferences/usersettings.h"
 
 class DlgPreferences;
 class DlgPrefController;
diff --git a/src/preferences/dialog/dlgpreferences.h b/src/preferences/dialog/dlgpreferences.h
index b1503a996ead..95b5d78f49ba 100644
--- a/src/preferences/dialog/dlgpreferences.h
+++ b/src/preferences/dialog/dlgpreferences.h
@@ -4,12 +4,13 @@
 #include <QEvent>
 #include <QRect>
 #include <QStringList>
+#include <memory>
 
-#include "preferences/dialog/ui_dlgpreferencesdlg.h"
-#include "preferences/usersettings.h"
 #include "control/controlpushbutton.h"
+#include "preferences/dialog/ui_dlgpreferencesdlg.h"
 #include "preferences/dlgpreferencepage.h"
 #include "preferences/settingsmanager.h"
+#include "preferences/usersettings.h"
 
 class MixxxMainWindow;
 class SoundManager;
diff --git a/src/preferences/dialog/dlgprefinterface.h b/src/preferences/dialog/dlgprefinterface.h
index f7ad65c1a896..b5acf367988d 100644
--- a/src/preferences/dialog/dlgprefinterface.h
+++ b/src/preferences/dialog/dlgprefinterface.h
@@ -1,11 +1,12 @@
 #pragma once
 
 #include <QWidget>
+#include <memory>
 
 #include "preferences/constants.h"
 #include "preferences/dialog/ui_dlgprefinterfacedlg.h"
-#include "preferences/usersettings.h"
 #include "preferences/dlgpreferencepage.h"
+#include "preferences/usersettings.h"
 
 class ControlProxy;
 class ControlPotmeter;
diff --git a/src/preferences/dialog/dlgprefsound.h b/src/preferences/dialog/dlgprefsound.h
index 283027b43723..900695080685 100644
--- a/src/preferences/dialog/dlgprefsound.h
+++ b/src/preferences/dialog/dlgprefsound.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <memory>
+
 #include "defs_urls.h"
 #include "preferences/dialog/ui_dlgprefsounddlg.h"
 #include "preferences/dlgpreferencepage.h"
diff --git a/src/preferences/dialog/dlgprefwaveform.h b/src/preferences/dialog/dlgprefwaveform.h
index 2bfca0dc5869..7f7758f7b284 100644
--- a/src/preferences/dialog/dlgprefwaveform.h
+++ b/src/preferences/dialog/dlgprefwaveform.h
@@ -1,10 +1,11 @@
 #pragma once
 
 #include <QWidget>
+#include <memory>
 
 #include "preferences/dialog/ui_dlgprefwaveformdlg.h"
-#include "preferences/usersettings.h"
 #include "preferences/dlgpreferencepage.h"
+#include "preferences/usersettings.h"
 
 class MixxxMainWindow;
 class Library;