diff --git a/xml/dom-impl/src/com/intellij/codeInsight/navigation/NavigationGutterIconBuilder.java b/xml/dom-impl/src/com/intellij/codeInsight/navigation/NavigationGutterIconBuilder.java
index 841fa87f6c79..f9669c0417cd 100644
--- a/xml/dom-impl/src/com/intellij/codeInsight/navigation/NavigationGutterIconBuilder.java
+++ b/xml/dom-impl/src/com/intellij/codeInsight/navigation/NavigationGutterIconBuilder.java
@@ -57,7 +57,7 @@ import java.util.*;
  */
 public class NavigationGutterIconBuilder<T> {
   @NonNls private static final String PATTERN = "&nbsp;&nbsp;&nbsp;&nbsp;{0}";
-  private static final NotNullFunction<PsiElement,Collection<? extends PsiElement>> DEFAULT_PSI_CONVERTOR =
+  protected static final NotNullFunction<PsiElement,Collection<? extends PsiElement>> DEFAULT_PSI_CONVERTOR =
     ContainerUtil::createMaybeSingletonList;
 
   private final Icon myIcon;