--- a/tools/assistant/lib/qhelpcontentwidget.cpp	Fri Feb 19 23:40:16 2010 +0200
+++ b/tools/assistant/lib/qhelpcontentwidget.cpp	Fri Mar 12 15:46:37 2010 +0200
@@ -253,7 +253,7 @@
     const QStringList fileNames = m_helpEngine->orderedFileNameList;
     m_mutex.unlock();
 
-    foreach (QString dbFileName, fileNames) {
+    foreach (const QString &dbFileName, fileNames) {
         m_mutex.lock();
         if (m_abort) {
             m_abort = false;