diff --git a/CMakeLists.txt b/CMakeLists.txt
index f0ee71a4..cea3bdb9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -267,8 +267,6 @@ set(PROJECT_SOURCES
         ftshelpers.hh
         fulltextsearch.cc
         fulltextsearch.hh
-        gdappstyle.cc
-        gdappstyle.hh
         gddebug.cc
         gddebug.hh
         german.cc
diff --git a/goldendict.pro b/goldendict.pro
index e49d7059..5b16a6e8 100644
--- a/goldendict.pro
+++ b/goldendict.pro
@@ -352,7 +352,6 @@ HEADERS += \
     src/common/folding.hh \
     src/ftshelpers.hh \
     src/fulltextsearch.hh \
-    src/gdappstyle.hh \
     src/gestures.hh \
     src/headwordsmodel.hh \
     src/history.hh \
@@ -474,7 +473,6 @@ SOURCES += \
     src/common/folding.cc \
     src/ftshelpers.cc \
     src/fulltextsearch.cc \
-    src/gdappstyle.cc \
     src/gestures.cc \
     src/headwordsmodel.cc \
     src/history.cc \
diff --git a/src/gdappstyle.cc b/src/gdappstyle.cc
deleted file mode 100644
index 76852705..00000000
--- a/src/gdappstyle.cc
+++ /dev/null
@@ -1,52 +0,0 @@
-/* This file is (c) 2012 Tvangeste <i.4m.l33t@yandex.ru>
- * Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
-
-#include "gdappstyle.hh"
-
-#include "dictionarybar.hh"
-
-#include <QWidget>
-#include <QToolButton>
-
-GdAppStyle::GdAppStyle(QProxyStyle * parent) : QProxyStyle(parent) {}
-
-int GdAppStyle::pixelMetric ( PixelMetric metric, const QStyleOption * option, const QWidget * widget) const
-{
-  int defaultVal = QProxyStyle::pixelMetric(metric, option, widget);
-
-  if ( dictionaryBarButton( widget ) )
-  {
-    if ( metric == QStyle::PM_ButtonShiftVertical || metric == QStyle::PM_ButtonShiftHorizontal )
-    {
-      if (option ->state & State_Sunken ) {
-        return defaultVal;
-      }
-
-      if ( option ->state & State_On ) {
-        // No shift for for the checked tool buttons on the dictionary bar,
-        // that's why the whole thing with QProxyStyle is neded, to achieve this.
-        return 0;
-      }
-    }
-  }
-
-  // Qt don't upscale icons for high dpi scales
-  // We limit maximum small icon size to 21 pixel
-  // (standard icon size for Lingvo dictionaries)
-  if( metric == QStyle::PM_SmallIconSize )
-    return defaultVal < 21 ? defaultVal : 21;
-
-  return defaultVal;
-}
-
-bool GdAppStyle::dictionaryBarButton(const QWidget * widget) const {
-  if (widget) {
-    const QWidget * parent = widget->parentWidget();
-    if ( parent &&
-         qobject_cast<const DictionaryBar *>( parent ) &&
-         qobject_cast<const QToolButton *>( widget ) )
-      return true;
-  }
-
-  return false;
-}
diff --git a/src/gdappstyle.hh b/src/gdappstyle.hh
deleted file mode 100644
index 1b3bb9e1..00000000
--- a/src/gdappstyle.hh
+++ /dev/null
@@ -1,30 +0,0 @@
-/* This file is (c) 2012 Tvangeste <i.4m.l33t@yandex.ru>
- * Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
-
-#ifndef GDAPPSTYLE_HH
-#define GDAPPSTYLE_HH
-
-#include <QtGlobal>
-#include <QStyle>
-#include <QProxyStyle>
-#include <QStyleOption>
-
-class GdAppStyle : public QProxyStyle
-{
-    Q_OBJECT
-
-public:
-  explicit GdAppStyle(QProxyStyle *style = 0);
-  virtual int pixelMetric ( PixelMetric metric, const QStyleOption * option = 0, const QWidget * widget = 0 ) const;
-
-signals:
-
-public slots:
-
-private:
-  /// is this widget a tool button on the dictionary bar?
-  bool dictionaryBarButton(const QWidget * widget) const;
-
-};
-
-#endif // GDAPPSTYLE_HH
diff --git a/src/main.cc b/src/main.cc
index c364ac0e..7ecb4f93 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -3,7 +3,6 @@
 
 #include <stdio.h>
 #include <QIcon>
-#include "gdappstyle.hh"
 #include "mainwindow.hh"
 #include "config.hh"
 #include <QWebEngineProfile>