1 files changed, 4 insertions, 2 deletions
diff --git a/src/gui/text/qtextdocument.cpp b/src/gui/text/qtextdocument.cpp
index c35069f..77e6aa1 100644
--- a/src/gui/text/qtextdocument.cpp
+++ b/src/gui/text/qtextdocument.cpp
@@ -596,8 +596,10 @@ void QTextDocument::markContentsDirty(int from, int length)
     Q_D(QTextDocument);
     d->documentChange(from, length);
     if (!d->inContentsChange) {
-        d->lout->documentChanged(d->docChangeFrom, d->docChangeOldLength, d->docChangeLength);
-        d->docChangeFrom = -1;
+        if (d->lout) {
+            d->lout->documentChanged(d->docChangeFrom, d->docChangeOldLength, d->docChangeLength);
+            d->docChangeFrom = -1;
+        }
     }
 }