diff --git a/src/Forms/HTMLEditor/TinyMCEConfig.php b/src/Forms/HTMLEditor/TinyMCEConfig.php
index 2bd132aeb..84743308a 100644
--- a/src/Forms/HTMLEditor/TinyMCEConfig.php
+++ b/src/Forms/HTMLEditor/TinyMCEConfig.php
@@ -242,6 +242,7 @@ class TinyMCEConfig extends HTMLEditorConfig
         'paste' => null,
         'code' => null,
         'importcss' => null,
+        'lists' => null,
     );
 
     /**
diff --git a/tests/php/Forms/HTMLEditor/HTMLEditorConfigTest.php b/tests/php/Forms/HTMLEditor/HTMLEditorConfigTest.php
index 6d517dbdb..5739ad84f 100644
--- a/tests/php/Forms/HTMLEditor/HTMLEditorConfigTest.php
+++ b/tests/php/Forms/HTMLEditor/HTMLEditorConfigTest.php
@@ -60,7 +60,7 @@ class HTMLEditorConfigTest extends SapphireTest
         $c = new TinyMCEConfig();
         $c->setTheme('modern');
         $c->setOption('language', 'es');
-        $c->disablePlugins('table', 'emoticons', 'paste', 'code', 'link', 'importcss');
+        $c->disablePlugins('table', 'emoticons', 'paste', 'code', 'link', 'importcss', 'lists');
         $c->enablePlugins(
             array(
                 'plugin1' => 'mypath/plugin1.js',
diff --git a/tests/php/Forms/HTMLEditor/TinyMCECombinedGeneratorTest.php b/tests/php/Forms/HTMLEditor/TinyMCECombinedGeneratorTest.php
index 55532935a..69b832c74 100644
--- a/tests/php/Forms/HTMLEditor/TinyMCECombinedGeneratorTest.php
+++ b/tests/php/Forms/HTMLEditor/TinyMCECombinedGeneratorTest.php
@@ -37,7 +37,7 @@ class TinyMCECombinedGeneratorTest extends SapphireTest
         $c = new TinyMCEConfig();
         $c->setTheme('testtheme');
         $c->setOption('language', 'en');
-        $c->disablePlugins('table', 'emoticons', 'paste', 'code', 'link', 'importcss');
+        $c->disablePlugins('table', 'emoticons', 'paste', 'code', 'link', 'importcss', 'lists');
         $c->enablePlugins(
             array(
                 'plugin1' => 'mycode/plugin1.js', //
@@ -100,7 +100,7 @@ EOS
         $c = new TinyMCEConfig();
         $c->setTheme('testtheme');
         $c->setOption('language', 'en');
-        $c->disablePlugins('table', 'emoticons', 'paste', 'code', 'link', 'importcss');
+        $c->disablePlugins('table', 'emoticons', 'paste', 'code', 'link', 'importcss', 'lists');
         $c->enablePlugins(['plugin1' => 'mycode/plugin1.js']);
         HTMLEditorConfig::set_config('testconfig', $c);