diff --git a/core/modules/system/templates/block--local-actions-block.html.twig b/core/modules/system/templates/block--local-actions-block.html.twig
new file mode 100644
index 0000000..65d57be
--- /dev/null
+++ b/core/modules/system/templates/block--local-actions-block.html.twig
@@ -0,0 +1,12 @@
+{% extends "@block/block.html.twig" %}
+{#
+/**
+ * @file
+ * Theme override for local actions (primary admin actions.)
+ */
+#}
+{% block content %}
+  {% if content %}
+    <nav>{{ content }}</nav>
+  {% endif %}
+{% endblock %}
diff --git a/core/themes/bartik/templates/block--local-actions-block.html.twig b/core/themes/bartik/templates/block--local-actions-block.html.twig
index 2a0f5c4..ee741d9 100644
--- a/core/themes/bartik/templates/block--local-actions-block.html.twig
+++ b/core/themes/bartik/templates/block--local-actions-block.html.twig
@@ -7,6 +7,6 @@
 #}
 {% block content %}
   {% if content %}
-    <nav class="action-links">{{ content }}</nav>
+    <ul class="action-links">{{ content }}</ul>
   {% endif %}
 {% endblock %}