diff --git a/xml/xml-psi-impl/src/com/intellij/embedding/MasqueradingPsiBuilderAdapter.java b/xml/xml-psi-impl/src/com/intellij/embedding/MasqueradingPsiBuilderAdapter.java
index 2fe9c1ac3af5..ddb8dc7e0f3b 100644
--- a/xml/xml-psi-impl/src/com/intellij/embedding/MasqueradingPsiBuilderAdapter.java
+++ b/xml/xml-psi-impl/src/com/intellij/embedding/MasqueradingPsiBuilderAdapter.java
@@ -108,7 +108,9 @@ public class MasqueradingPsiBuilderAdapter extends PsiBuilderAdapter {
 
     if (delegate.getCurrentOffset() > myShrunkSequence.get(myLexPosition).realStart) {
       LOG.error("delegate is ahead of my builder!",
-                new Attachment("offset = " + delegate.getCurrentOffset(), getOriginalText().toString()));
+                new Attachment("offset = " + delegate.getCurrentOffset(), getOriginalText().toString()),
+                new Attachment("myShrunkSequence", myShrunkSequence.toString())
+      );
       return;
     }