diff --git a/src/blackgui/components/hotkeydialog.cpp b/src/blackgui/components/hotkeydialog.cpp
index 75a5494d0..1a246faa8 100644
--- a/src/blackgui/components/hotkeydialog.cpp
+++ b/src/blackgui/components/hotkeydialog.cpp
@@ -46,8 +46,7 @@ namespace BlackGui
 {
     namespace Components
     {
-        CKeySelectionBox::CKeySelectionBox(QWidget *parent) :
-            QComboBox(parent)
+        CKeySelectionBox::CKeySelectionBox(QWidget *parent) : CHorizontalComboBox(parent)
         {
             connect(this, static_cast<void(CKeySelectionBox::*)(int)>(&CKeySelectionBox::currentIndexChanged), this, &CKeySelectionBox::updateSelectedIndex);
         }
@@ -243,17 +242,17 @@ namespace BlackGui
 
         void CHotkeyDialog::setupAdvancedFrame()
         {
-            clearAdvancedFrame();
-            auto allSupportedKeys = CKeyboardKeyList::allSupportedKeys();
+            this->clearAdvancedFrame();
+            const CKeyboardKeyList allSupportedKeys = CKeyboardKeyList::allSupportedKeys();
 
             const QStringList splitKeys = m_actionHotkey.getCombination().toQString().split('+', QString::SkipEmptyParts);
-            for (const auto &splitKey : splitKeys)
+            for (const QString &splitKey : splitKeys)
             {
                 if (splitKey == "+") continue;
 
                 int currentIndex = -1;
                 CKeySelectionBox *ksb = new CKeySelectionBox(ui->qf_Advanced);
-                for (const auto &supportedKey : allSupportedKeys)
+                for (const CKeyboardKey &supportedKey : allSupportedKeys)
                 {
                     QString supportedKeyAsString = supportedKey.toQString();
                     ksb->addItem(supportedKeyAsString, QVariant::fromValue(supportedKey));
@@ -267,6 +266,9 @@ namespace BlackGui
                 const int position = ui->qf_Advanced->layout()->count() - 1;
                 ksb->setProperty("position", position);
                 connect(ksb, &CKeySelectionBox::keySelectionChanged, this, &CHotkeyDialog::advancedKeyChanged);
+
+                const int width = qRound(1.5 * this->width());
+                ksb->setPopupWidth(qMin(width, 600));
             }
         }
 
diff --git a/src/blackgui/components/hotkeydialog.h b/src/blackgui/components/hotkeydialog.h
index ba9986628..011ae72d6 100644
--- a/src/blackgui/components/hotkeydialog.h
+++ b/src/blackgui/components/hotkeydialog.h
@@ -12,18 +12,17 @@
 #ifndef BLACKGUI_COMPONENTS_HOTKEYDIALOG_H
 #define BLACKGUI_COMPONENTS_HOTKEYDIALOG_H
 
-#include "blackgui/blackguiexport.h"
 #include "blackgui/models/actionmodel.h"
+#include "blackgui/horizontalcombobox.h"
+#include "blackgui/blackguiexport.h"
 #include "blackmisc/identifierlist.h"
 #include "blackmisc/input/actionhotkey.h"
 
-#include <QComboBox>
 #include <QDialog>
 #include <QObject>
 #include <QScopedPointer>
 
 class QItemSelection;
-class QWidget;
 
 namespace BlackCore { class CInputManager; }
 namespace BlackMisc { namespace Input { class CHotkeyCombination; } }
@@ -35,7 +34,7 @@ namespace BlackGui
         /*!
          * ComboBox for selecting keyboard keys
          */
-        class BLACKGUI_EXPORT CKeySelectionBox : public QComboBox
+        class BLACKGUI_EXPORT CKeySelectionBox : public CHorizontalComboBox
         {
             Q_OBJECT
 
diff --git a/src/blackgui/horizontalcombobox.cpp b/src/blackgui/horizontalcombobox.cpp
new file mode 100644
index 000000000..db11045b2
--- /dev/null
+++ b/src/blackgui/horizontalcombobox.cpp
@@ -0,0 +1,50 @@
+/* Copyright (C) 2014
+ * swift project Community / Contributors
+ *
+ * This file is part of swift Project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#include "horizontalcombobox.h"
+
+namespace BlackGui
+{
+    CHorizontalComboBox::CHorizontalComboBox(QWidget *parent) : QComboBox(parent)
+    {
+        m_view  = new QListView(this);
+        m_view->setFlow(QListView::LeftToRight);
+        this->setView(m_view);
+        for (QWidget *o : findChildren<QWidget *>())
+        {
+            if (o->inherits("QComboBoxPrivateContainer"))
+            {
+                //popup
+                o->setFixedHeight(view()->height());
+                break;
+            }
+        }
+    }
+
+    void CHorizontalComboBox::showPopup()
+    {
+        QComboBox::showPopup();
+        int w = m_popupWidth;
+        if (w < 0)
+        {
+            w = 0;
+            for (int i = 0; i < count(); i++)
+            {
+                const QModelIndex ix = model()->index(i, modelColumn(), rootModelIndex());
+                w += view()->visualRect(ix).width();
+            }
+        }
+        view()->setFixedWidth(w);
+    }
+
+    void CHorizontalComboBox::setPopupWidth(int w)
+    {
+        m_popupWidth = w;
+    }
+} // ns
diff --git a/src/blackgui/horizontalcombobox.h b/src/blackgui/horizontalcombobox.h
new file mode 100644
index 000000000..68758ff96
--- /dev/null
+++ b/src/blackgui/horizontalcombobox.h
@@ -0,0 +1,41 @@
+/* Copyright (C) 2018
+ * swift project Community / Contributors
+ *
+ * This file is part of swift Project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+//! \file
+
+#ifndef BLACKGUI_HORIZONTALCOMBOBOX_H
+#define BLACKGUI_HORIZONTALCOMBOBOX_H
+
+#include <QComboBox>
+#include <QListView>
+
+namespace BlackGui
+{
+    //! A combobox where the dropdown is horizontally and not vertically
+    class CHorizontalComboBox : public QComboBox
+    {
+        Q_OBJECT
+
+    public:
+        //! ComboBox displaying the values horizontally
+        explicit CHorizontalComboBox(QWidget *parent = nullptr);
+
+        //! \copydoc QComboBox::showPopup
+        virtual void showPopup() override;
+
+        //! Width of the popup
+        void setPopupWidth(int w);
+
+    private:
+        QListView *m_view = nullptr;
+        int m_popupWidth = -1;
+    };
+} // ns
+
+#endif // guard
diff --git a/src/blackgui/share/qss/stdwidget.qss b/src/blackgui/share/qss/stdwidget.qss
index efc330459..ab68160ca 100644
--- a/src/blackgui/share/qss/stdwidget.qss
+++ b/src/blackgui/share/qss/stdwidget.qss
@@ -413,6 +413,12 @@ QComboBox QAbstractItemView {
   qproperty-textElideMode: ElideMiddle;
 }
 
+/**
+QComboBox::drop-down { background-color: yellow; }
+QComboBox QListView { }
+**/
+
+
 QDoubleSpinBox {
   border: 1px solid green;
   border-radius: 5px;