diff --git a/platform/lang-impl/src/com/intellij/psi/impl/source/tree/injected/MultiHostRegistrarImpl.java b/platform/lang-impl/src/com/intellij/psi/impl/source/tree/injected/MultiHostRegistrarImpl.java
index 38d060ebaeda..d539bb0b3f26 100644
--- a/platform/lang-impl/src/com/intellij/psi/impl/source/tree/injected/MultiHostRegistrarImpl.java
+++ b/platform/lang-impl/src/com/intellij/psi/impl/source/tree/injected/MultiHostRegistrarImpl.java
@@ -214,7 +214,7 @@ public class MultiHostRegistrarImpl implements MultiHostRegistrar, ModificationT
         addToResults(new Place(shreds), null);
         return;
       }
-      PsiDocumentManager documentManager = PsiDocumentManager.getInstance(myProject);
+      PsiDocumentManagerBase documentManager = (PsiDocumentManagerBase)PsiDocumentManager.getInstance(myProject);
 
       Place place = new Place(shreds);
       DocumentWindowImpl documentWindow = new DocumentWindowImpl(myHostDocument, isOneLineEditor, place);
@@ -237,7 +237,7 @@ public class MultiHostRegistrarImpl implements MultiHostRegistrar, ModificationT
 
         assert parsedNode instanceof FileElement : "Parsed to "+parsedNode+" instead of FileElement";
 
-        String documentText = documentWindow.getText();
+        String documentText = documentManager.getLastCommittedDocument(documentWindow).getText();
         assert ((FileElement)parsedNode).textMatches(outChars) : exceptionContext("Before patch: doc:\n'" + documentText + "'\n---PSI:\n'" + parsedNode.getText() + "'\n---chars:\n'"+outChars+"'");
 
         viewProvider.setPatchingLeaves(true);
@@ -362,7 +362,7 @@ public class MultiHostRegistrarImpl implements MultiHostRegistrar, ModificationT
     return node;
   }
 
-  private void assertEverythingIsAllright(PsiDocumentManager documentManager, DocumentWindowImpl documentWindow, PsiFile psiFile) {
+  private void assertEverythingIsAllright(PsiDocumentManagerBase documentManager, DocumentWindowImpl documentWindow, PsiFile psiFile) {
     boolean isAncestor = false;
     for (PsiLanguageInjectionHost.Shred shred : shreds) {
       PsiLanguageInjectionHost host = shred.getHost();
@@ -372,14 +372,15 @@ public class MultiHostRegistrarImpl implements MultiHostRegistrar, ModificationT
 
     InjectedFileViewProvider injectedFileViewProvider = (InjectedFileViewProvider)psiFile.getViewProvider();
     assert injectedFileViewProvider.isValid() : "Invalid view provider: "+injectedFileViewProvider;
-    assert psiFile.textMatches(documentWindow.getText()) : "Document window text mismatch";
+    DocumentEx frozenWindow = documentManager.getLastCommittedDocument(documentWindow);
+    assert psiFile.textMatches(frozenWindow.getText()) : "Document window text mismatch";
     assert injectedFileViewProvider.getDocument() == documentWindow : "Provider document mismatch";
     assert documentManager.getCachedDocument(psiFile) == documentWindow : "Cached document mismatch";
     assert Comparing.equal(psiFile.getVirtualFile(), injectedFileViewProvider.getVirtualFile()) : "Virtual file mismatch: " +
                                                                                                   psiFile.getVirtualFile() +
                                                                                                   "; " +
                                                                                                   injectedFileViewProvider.getVirtualFile();
-    PsiDocumentManagerBase.checkConsistency(psiFile, documentWindow);
+    PsiDocumentManagerBase.checkConsistency(psiFile, frozenWindow);
   }
 
   void addToResults(Place place, PsiFile psiFile, MultiHostRegistrarImpl from) {