diff --git a/xml/xml-psi-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/providers/XsdRegExpParserDefinition.java b/xml/xml-psi-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/providers/XsdRegExpParserDefinition.java
index df41bfe6a10a..9c1b7539bb84 100644
--- a/xml/xml-psi-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/providers/XsdRegExpParserDefinition.java
+++ b/xml/xml-psi-impl/src/com/intellij/psi/impl/source/resolve/reference/impl/providers/XsdRegExpParserDefinition.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2016 JetBrains s.r.o.
+ * Copyright 2000-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,7 +29,7 @@ import java.util.EnumSet;
 
 public class XsdRegExpParserDefinition extends RegExpParserDefinition {
 
-  public static Language LANGUAGE = new Language(RegExpLanguage.INSTANCE, "XsdRegExp") {};
+  public static final Language LANGUAGE = new Language(RegExpLanguage.INSTANCE, "XsdRegExp") {};
 
   private static final IFileElementType XSD_REGEXP_FILE = new IFileElementType("XSD_REGEXP_FILE", LANGUAGE);