diff --git a/core/lib/Drupal/Core/Layout/IconGenerator.php b/core/lib/Drupal/Core/Layout/IconGenerator.php
index 6b5a2c2..1daa0b0 100644
--- a/core/lib/Drupal/Core/Layout/IconGenerator.php
+++ b/core/lib/Drupal/Core/Layout/IconGenerator.php
@@ -10,7 +10,7 @@ class IconGenerator implements IconGeneratorInterface {
   /**
    * {@inheritdoc}
    */
-  public function generateSvgFromIconMap(array $icon_map, $width = 250, $height = 300, $stroke_width = 1, $padding = 3, $fill = 'lightgray', $stroke = 'black') {
+  public function generateSvgFromIconMap(array $icon_map, $width = 250, $height = 300, $stroke_width = 2, $padding = 5, $fill = 'lightgray', $stroke = 'black') {
     $build = [
       '#type' => 'html_tag',
       '#tag' => 'svg',
diff --git a/core/lib/Drupal/Core/Layout/IconGeneratorInterface.php b/core/lib/Drupal/Core/Layout/IconGeneratorInterface.php
index 369b33f..711f8c9 100644
--- a/core/lib/Drupal/Core/Layout/IconGeneratorInterface.php
+++ b/core/lib/Drupal/Core/Layout/IconGeneratorInterface.php
@@ -47,6 +47,6 @@
    * @return array
    *   A render array representing a SVG icon.
    */
-  public function generateSvgFromIconMap(array $icon_map, $width = 250, $height = 300, $stroke_width = 1, $padding = 3, $fill = 'lightgray', $stroke = 'black');
+  public function generateSvgFromIconMap(array $icon_map, $width = 250, $height = 300, $stroke_width = 2, $padding = 5, $fill = 'lightgray', $stroke = 'black');
 
 }
diff --git a/core/tests/Drupal/KernelTests/Core/Layout/IconGeneratorTest.php b/core/tests/Drupal/KernelTests/Core/Layout/IconGeneratorTest.php
index a5699e3..bc69478 100644
--- a/core/tests/Drupal/KernelTests/Core/Layout/IconGeneratorTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Layout/IconGeneratorTest.php
@@ -19,7 +19,7 @@ class IconGeneratorTest extends KernelTestBase {
    */
   public function testGenerateSvgFromIconMap($icon_map, $expected) {
     $renderer = $this->container->get('renderer');
-    $icon_generator = new IconGenerator($renderer);
+    $icon_generator = new IconGenerator();
     $build = $icon_generator->generateSvgFromIconMap($icon_map);
     $output = (string) $renderer->executeInRenderContext(new RenderContext(), function () use ($build, $renderer) {
       return $renderer->render($build);