diff --git a/src/Extension/InlinesOnly/InlinesOnlyExtension.php b/src/Extension/InlinesOnly/InlinesOnlyExtension.php
index f85fad5..7777510 100644
--- a/src/Extension/InlinesOnly/InlinesOnlyExtension.php
+++ b/src/Extension/InlinesOnly/InlinesOnlyExtension.php
@@ -30,7 +30,6 @@ final class InlinesOnlyExtension implements ConfigurableExtensionInterface
             'use_underscore' => Expect::bool(true),
             'enable_strong' => Expect::bool(true),
             'enable_em' => Expect::bool(true),
-            'unordered_list_markers' => Expect::listOf('string')->min(1)->default(['*', '+', '-'])->mergeDefaults(false),
         ]));
     }
 
diff --git a/tests/functional/Extension/InlinesOnly/InlinesOnlyFunctionalTest.php b/tests/functional/Extension/InlinesOnly/InlinesOnlyFunctionalTest.php
index 60b55a3..8b06183 100644
--- a/tests/functional/Extension/InlinesOnly/InlinesOnlyFunctionalTest.php
+++ b/tests/functional/Extension/InlinesOnly/InlinesOnlyFunctionalTest.php
@@ -64,20 +64,4 @@ final class InlinesOnlyFunctionalTest extends TestCase
             [$markdown, $html],
         ];
     }
-
-    /**
-     * InlinesOnlyExtension reuses the shared 'commonmark' config schema, so the
-     * option must be accepted even though it renders no lists.
-     *
-     * @see https://github.com/thephpleague/commonmark/issues/1015
-     */
-    public function testUnorderedListMarkersConfigIsAccepted(): void
-    {
-        $environment = new Environment(['commonmark' => ['unordered_list_markers' => ['*']]]);
-        $environment->addExtension(new InlinesOnlyExtension());
-        $converter = new MarkdownConverter($environment);
-
-        $this->assertSame(['*'], $environment->getConfiguration()->get('commonmark/unordered_list_markers'));
-        $this->assertSame('<em>foo</em>', \trim($converter->convert('*foo*')->getContent()));
-    }
 }