diff --git a/src/laybasic/laybasic/layDitherPattern.h b/src/laybasic/laybasic/layDitherPattern.h
index 9a2e91836..a0980e581 100644
--- a/src/laybasic/laybasic/layDitherPattern.h
+++ b/src/laybasic/laybasic/layDitherPattern.h
@@ -134,6 +134,7 @@ public:
    *
    *  @param width The desired width (-1 for default)
    *  @param height The desired height (-1 for default)
+   *  @param frame_width The width of the frame around the bitmap
    */
   QBitmap get_bitmap (int width = -1, int height = -1, int frame_width = -1) const;
 #endif
diff --git a/src/layui/layui/SelectStippleForm.ui b/src/layui/layui/SelectStippleForm.ui
index 40b6a314b..e4363cd98 100644
--- a/src/layui/layui/SelectStippleForm.ui
+++ b/src/layui/layui/SelectStippleForm.ui
@@ -54,8 +54,8 @@
      </property>
      <property name="iconSize">
       <size>
-       <width>34</width>
-       <height>36</height>
+       <width>32</width>
+       <height>32</height>
       </size>
      </property>
      <property name="movement">
diff --git a/src/layui/layui/laySelectStippleForm.cc b/src/layui/layui/laySelectStippleForm.cc
index 76f9354a4..ca15ca0f2 100644
--- a/src/layui/layui/laySelectStippleForm.cc
+++ b/src/layui/layui/laySelectStippleForm.cc
@@ -77,8 +77,16 @@ namespace {
 void 
 SelectStippleForm::update ()
 {
+#if QT_VERSION >= 0x050000
+  double dpr = devicePixelRatio ();
+#else
+  double dpr = 1.0;
+#endif
+
   mp_ui->stipple_items->clear ();
 
+  QSize icon_size = mp_ui->stipple_items->iconSize ();
+
   if (m_include_nil) {
     new QListWidgetItem (QObject::tr ("None"), mp_ui->stipple_items);
   }
@@ -91,21 +99,41 @@ SelectStippleForm::update ()
 
   //  fill the list of stipple items
   for (lay::DitherPattern::iterator i = m_pattern.begin (); i != m_pattern.begin_custom (); ++i) {
+
     std::string name (i->name ());
     if (name.empty ()) {
       name = tl::sprintf ("#%d", std::distance (m_pattern.begin (), i));
     }
-    new QListWidgetItem (QIcon (i->get_bitmap ()), tl::to_qstring (name), mp_ui->stipple_items);
+
+    lay::DitherPatternInfo dp_info = *i;
+    dp_info.scale_pattern (dpr);
+    QBitmap bitmap = dp_info.get_bitmap (icon_size.width () * dpr, icon_size.height () * dpr, dpr);
+#if QT_VERSION >= 0x050000
+    bitmap.setDevicePixelRatio (dpr);
+#endif
+    new QListWidgetItem (QIcon (bitmap), tl::to_qstring (name), mp_ui->stipple_items);
+
   }
 
   for (std::vector <lay::DitherPattern::iterator>::const_iterator i = iters.begin (); i != iters.end (); ++i) {
+
     if ((*i)->order_index () > 0) {
+
       std::string name ((*i)->name ());
       if (name.empty ()) {
         name = tl::sprintf ("custom #%d", (*i)->order_index ());
       }
-      new QListWidgetItem (QIcon ((*i)->get_bitmap ()), tl::to_qstring (name), mp_ui->stipple_items);
+
+      lay::DitherPatternInfo dp_info = **i;
+      dp_info.scale_pattern (dpr);
+      QBitmap bitmap = dp_info.get_bitmap (icon_size.width () * dpr, icon_size.height () * dpr, dpr);
+#if QT_VERSION >= 0x050000
+      bitmap.setDevicePixelRatio (dpr);
+#endif
+      new QListWidgetItem (QIcon (bitmap), tl::to_qstring (name), mp_ui->stipple_items);
+
     }
+
   }
 }