diff --git a/xml/impl/src/com/intellij/psi/impl/source/xml/DefaultXmlTagNameProvider.java b/xml/impl/src/com/intellij/psi/impl/source/xml/DefaultXmlTagNameProvider.java
index 2fb935378b02..da79a6000e2d 100644
--- a/xml/impl/src/com/intellij/psi/impl/source/xml/DefaultXmlTagNameProvider.java
+++ b/xml/impl/src/com/intellij/psi/impl/source/xml/DefaultXmlTagNameProvider.java
@@ -73,10 +73,10 @@ public class DefaultXmlTagNameProvider implements XmlTagNameProvider {
     for (int i = 0; i < variants.size(); i++) {
       XmlElementDescriptor descriptor = variants.get(i);
       String qname = descriptor.getName(tag);
+      if (!visited.add(qname)) continue;
       if (!prefix.isEmpty() && qname.startsWith(prefix + ":")) {
         qname = qname.substring(prefix.length() + 1);
       }
-      if (!visited.add(qname)) continue;
 
       PsiElement declaration = descriptor.getDeclaration();
       LookupElementBuilder lookupElement = declaration == null ? LookupElementBuilder.create(qname) : LookupElementBuilder.create(declaration, qname);