diff --git a/xml/xml-psi-impl/src/com/intellij/xml/util/HtmlUtil.java b/xml/xml-psi-impl/src/com/intellij/xml/util/HtmlUtil.java
index 3eff253641f3..1bbc060a0c0b 100644
--- a/xml/xml-psi-impl/src/com/intellij/xml/util/HtmlUtil.java
+++ b/xml/xml-psi-impl/src/com/intellij/xml/util/HtmlUtil.java
@@ -427,6 +427,10 @@ public class HtmlUtil {
 
   public static boolean isHtml5Context(XmlElement context) {
     XmlDocument doc = PsiTreeUtil.getParentOfType(context, XmlDocument.class);
+    if (doc == null && context != null) {
+      return Html5SchemaProvider.getHtml5SchemaLocation()
+        .equals(ExternalResourceManagerEx.getInstanceEx().getDefaultHtmlDoctype(context.getProject()));
+    }
     return isHtml5Document(doc);
   }