diff --git a/src/gui/text/qtextdocumentlayout.cpp b/src/gui/text/qtextdocumentlayout.cpp
index 313700429c6..b2c82b8654d 100644
--- a/src/gui/text/qtextdocumentlayout.cpp
+++ b/src/gui/text/qtextdocumentlayout.cpp
@@ -2883,11 +2883,11 @@ void QTextDocumentLayout::documentChanged(int from, int oldLength, int length)
 {
     Q_D(QTextDocumentLayout);
 
-    QTextBlock blockIt = document()->findBlock(from);
+    QTextBlock startIt = document()->findBlock(from);
     QTextBlock endIt = document()->findBlock(qMax(0, from + length - 1));
     if (endIt.isValid())
         endIt = endIt.next();
-     for (; blockIt.isValid() && blockIt != endIt; blockIt = blockIt.next())
+    for (QTextBlock blockIt = startIt; blockIt.isValid() && blockIt != endIt; blockIt = blockIt.next())
          blockIt.clearLayout();
 
     if (d->docPrivate->pageSize.isNull())
@@ -2929,6 +2929,9 @@ void QTextDocumentLayout::documentChanged(int from, int oldLength, int length)
 
     d->insideDocumentChange = false;
 
+    for (QTextBlock blockIt = startIt; blockIt.isValid() && blockIt != endIt; blockIt = blockIt.next())
+         emit updateBlock(blockIt);
+
     if (d->showLayoutProgress) {
         const QSizeF newSize = dynamicDocumentSize();
         if (newSize != d->lastReportedSize) {