--- a/tools/assistant/lib/qhelpsearchengine.h	Fri Sep 17 08:34:18 2010 +0300
+++ b/tools/assistant/lib/qhelpsearchengine.h	Mon Oct 04 01:19:32 2010 +0300
@@ -80,7 +80,8 @@
     Q_OBJECT
 
 public:
-    QHelpSearchEngine(QHelpEngineCore *helpEngine, QObject *parent = 0);
+    explicit QHelpSearchEngine(QHelpEngineCore *helpEngine,
+        QObject *parent = 0);
     ~QHelpSearchEngine();
 
     QHelpSearchQueryWidget* queryWidget();