--- a/tools/assistant/lib/qhelpengine.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/tools/assistant/lib/qhelpengine.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -80,7 +80,7 @@
 
     connect(helpEngineCore, SIGNAL(setupFinished()),
         this, SLOT(applyCurrentFilter()));
-    connect(helpEngineCore, SIGNAL(currentFilterChanged(const QString&)),
+    connect(helpEngineCore, SIGNAL(currentFilterChanged(QString)),
         this, SLOT(applyCurrentFilter()));
 
 }