1 files changed, 1 insertions, 1 deletions
diff --git a/src/tools/qdoc/doc/examples/mainwindow.cpp b/src/tools/qdoc/doc/examples/mainwindow.cpp
index 6a03a8e8f2..68b878c07e 100644
--- a/src/tools/qdoc/doc/examples/mainwindow.cpp
+++ b/src/tools/qdoc/doc/examples/mainwindow.cpp
@@ -136,7 +136,7 @@ void MainWindow::createActions()
     openAct->setShortcuts(QKeySequence::Open);
     connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
 
-    foreach (QByteArray format, QImageWriter::supportedImageFormats()) {
+    foreach (const QByteArray &format, QImageWriter::supportedImageFormats()) {
         QString text = tr("%1...").arg(QString(format).toUpper());
 
         QAction *action = new QAction(text, this);