diff --git a/ksim/ksim.cpp b/ksim/ksim.cpp
index 91fb26d..1f7ca58 100644
--- a/ksim/ksim.cpp
+++ b/ksim/ksim.cpp
@@ -25,6 +25,7 @@
 
 #include <tqlayout.h>
 
+#include <tdeapplication.h>
 #include <tdeaboutapplication.h>
 #include <kbugreport.h>
 #include <tdeaboutdata.h>
@@ -109,6 +110,7 @@ void KSim::PanelExtension::about()
 
 void KSim::PanelExtension::help()
 {
+  kapp->invokeHelp( TQString(), "ksim" );
 }
 
 void KSim::PanelExtension::preferences()