--- a/tools/assistant/lib/qhelpengine.h	Fri Sep 17 08:34:18 2010 +0300
+++ b/tools/assistant/lib/qhelpengine.h	Mon Oct 04 01:19:32 2010 +0300
@@ -62,7 +62,7 @@
     Q_OBJECT
 
 public:
-    QHelpEngine(const QString &collectionFile, QObject *parent = 0);
+    explicit QHelpEngine(const QString &collectionFile, QObject *parent = 0);
     ~QHelpEngine();
 
     QHelpContentModel *contentModel() const;