diff --git a/apps/opencs/model/prefs/state.cpp b/apps/opencs/model/prefs/state.cpp
index 8657044b02..9ce368aa08 100644
--- a/apps/opencs/model/prefs/state.cpp
+++ b/apps/opencs/model/prefs/state.cpp
@@ -5,8 +5,6 @@
 #include <algorithm>
 #include <sstream>
 
-#include <QMutexLocker>
-
 #include "intsetting.hpp"
 #include "doublesetting.hpp"
 #include "boolsetting.hpp"
diff --git a/apps/opencs/view/prefs/keybindingpage.cpp b/apps/opencs/view/prefs/keybindingpage.cpp
index 81e6a4a521..8b2694fb0a 100644
--- a/apps/opencs/view/prefs/keybindingpage.cpp
+++ b/apps/opencs/view/prefs/keybindingpage.cpp
@@ -10,7 +10,6 @@
 
 #include "../../model/prefs/setting.hpp"
 #include "../../model/prefs/category.hpp"
-#include "../../model/prefs/state.hpp"
 
 namespace CSVPrefs
 {
diff --git a/apps/opencs/view/prefs/page.cpp b/apps/opencs/view/prefs/page.cpp
index 281d0d08b3..77d4f60f3f 100644
--- a/apps/opencs/view/prefs/page.cpp
+++ b/apps/opencs/view/prefs/page.cpp
@@ -6,7 +6,6 @@
 
 #include "../../model/prefs/setting.hpp"
 #include "../../model/prefs/category.hpp"
-#include "../../model/prefs/state.hpp"
 
 CSVPrefs::Page::Page (CSMPrefs::Category& category, QWidget *parent)
 : PageBase (category, parent)