diff --git a/toonz/sources/toonz/pane.cpp b/toonz/sources/toonz/pane.cpp
index d843e51..27042de 100644
--- a/toonz/sources/toonz/pane.cpp
+++ b/toonz/sources/toonz/pane.cpp
@@ -245,7 +245,7 @@ TPanelTitleBarButton::TPanelTitleBarButton(QWidget *parent,
     , m_buttonSet(0)
     , m_id(0) {
   updatePixmaps();
-  setFixedSize(m_onPixmap.size());
+  setFixedSize(m_onPixmap.size() / m_onPixmap.devicePixelRatio());
 }
 
 //-----------------------------------------------------------------------------
diff --git a/toonz/sources/toonz/pane.h b/toonz/sources/toonz/pane.h
index 5cc9519..3f000bd 100644
--- a/toonz/sources/toonz/pane.h
+++ b/toonz/sources/toonz/pane.h
@@ -187,8 +187,6 @@ protected:
   void mousePressEvent(QMouseEvent *event) override;
   void mouseDoubleClickEvent(QMouseEvent *) override;
 
-  QPixmap getPixmap(const QString &iconSVGName, bool rollover);
-
   Q_PROPERTY(QColor TitleColor READ getTitleColor WRITE setTitleColor);
   Q_PROPERTY(QColor ActiveTitleColor READ getActiveTitleColor WRITE
                  setActiveTitleColor);