diff --git a/klines.cpp b/klines.cpp
--- a/klines.cpp
+++ b/klines.cpp
@@ -43,6 +43,7 @@
 KLinesMainWindow::KLinesMainWindow()
 {
     KLinesRenderer::Init();
+    KLinesRenderer::setDevicePixelRatio(devicePixelRatioF());
 
     mwidget = new MainWidget(this);
     setCentralWidget( mwidget );
diff --git a/main.cpp b/main.cpp
--- a/main.cpp
+++ b/main.cpp
@@ -33,6 +33,7 @@
 
 int main( int argc, char **argv )
 {
+    QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
     QApplication app(argc, argv);
     Kdelibs4ConfigMigrator migrate(QStringLiteral("klines"));
     migrate.setConfigFiles(QStringList() << QStringLiteral("klinesrc"));
diff --git a/renderer.h b/renderer.h
--- a/renderer.h
+++ b/renderer.h
@@ -139,6 +139,16 @@
             return 0;
         }
     }
+
+    static qreal devicePixelRatio()
+    {
+        return m_devicePixelRatio;
+    }
+    static void setDevicePixelRatio(qreal dpr)
+    {
+        m_devicePixelRatio = dpr;
+    }
+
 private:
     // disable copy - it's singleton
     KLinesRenderer();
@@ -170,6 +180,8 @@
     static int m_selDuration;
     static int m_dieDuration;
     static int m_moveDuration; // one cell
+
+    static qreal m_devicePixelRatio;
 };
 
 #endif
diff --git a/renderer.cpp b/renderer.cpp
--- a/renderer.cpp
+++ b/renderer.cpp
@@ -59,6 +59,7 @@
 int KLinesRenderer::m_selDuration(0);
 int KLinesRenderer::m_dieDuration(0);
 int KLinesRenderer::m_moveDuration(0);
+qreal KLinesRenderer::m_devicePixelRatio(1.0);
 
 KLinesRenderer  *g_KLinesRenderer = nullptr;
 
@@ -168,7 +169,8 @@
 
     QSize sz = customSize.isValid() ? customSize : cellExtent();
 
-    QPixmap pix = m_renderer->spritePixmap(svgName, sz);
+    QPixmap pix = m_renderer->spritePixmap(svgName, sz * m_devicePixelRatio);
+    pix.setDevicePixelRatio(m_devicePixelRatio);
 
     return pix;
 }