diff --git a/usr/lib/linuxmint/mintSources/mintSources.py b/usr/lib/linuxmint/mintSources/mintSources.py
index 11b2399..0f791b5 100755
--- a/usr/lib/linuxmint/mintSources/mintSources.py
+++ b/usr/lib/linuxmint/mintSources/mintSources.py
@@ -517,6 +517,7 @@ def __init__(self, application, ui_builder):
 
         r = Gtk.CellRendererPixbuf()
         col = Gtk.TreeViewColumn(_("Country"), r, pixbuf = MirrorSelectionDialog.MIRROR_COUNTRY_FLAG_COLUMN)
+        col.set_cell_data_func(r, self.data_func_surface)
         self._treeview.append_column(col)
         col.set_sort_column_id(MirrorSelectionDialog.MIRROR_TOOLTIP_COLUMN)
 
@@ -538,6 +539,11 @@ def __init__(self, application, ui_builder):
         with open('/usr/lib/linuxmint/mintSources/countries.json', encoding="utf-8", errors="ignore") as data_file:
             self.countries = json.load(data_file)
 
+    def data_func_surface(self, column, cell, model, iter_, *args):
+        pixbuf = model.get_value(iter_, MirrorSelectionDialog.MIRROR_COUNTRY_FLAG_COLUMN)
+        surface = Gdk.cairo_surface_create_from_pixbuf(pixbuf, self._application.scale)
+        cell.set_property("surface", surface)
+
     def _row_activated(self, treeview, path, view_column):
         self._dialog.response(Gtk.ResponseType.APPLY)
 
@@ -561,10 +567,11 @@ def _update_list(self):
             tooltip = country_name
             if mirror.name != mirror.url:
                 tooltip = "%s: %s" % (country_name, mirror.name)
+            pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(flag, -1, FLAG_SIZE * self._application.scale)
             self._mirrors_model.append((
                 mirror,
                 mirror.url,
-                GdkPixbuf.Pixbuf.new_from_file_at_size(flag, -1, FLAG_SIZE),
+                pixbuf,
                 0,
                 None,
                 tooltip,
@@ -810,6 +817,8 @@ def __init__(self):
 
         self._main_window.set_icon_name("software-sources")
 
+        self.scale = self._main_window.get_scale_factor()
+
         self._official_repositories_page = self.builder.get_object("official_repositories_page")
 
         self.apt = mintcommon.aptdaemon.APT(self._main_window)
@@ -1845,11 +1854,13 @@ def update_flags(self):
                     base_flag_path = flag
                 break
 
-        pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(mint_flag_path, -1, FLAG_SIZE)
-        self.builder.get_object("image_mirror").set_from_pixbuf(pixbuf)
+        pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(mint_flag_path, -1, FLAG_SIZE * self.scale)
+        surface = Gdk.cairo_surface_create_from_pixbuf(pixbuf, self.scale)
+        self.builder.get_object("image_mirror").set_from_surface(surface)
 
-        pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(base_flag_path, -1, FLAG_SIZE)
-        self.builder.get_object("image_base_mirror").set_from_pixbuf(pixbuf)
+        pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(base_flag_path, -1, FLAG_SIZE * self.scale)
+        surface = Gdk.cairo_surface_create_from_pixbuf(pixbuf, self.scale)
+        self.builder.get_object("image_base_mirror").set_from_surface(surface)
 
     def get_clipboard_text(self, source_type):
         clipboard = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)