--- a/src/interfaces/idocumentscene.h
+++ b/src/interfaces/idocumentscene.h
@@ -21,6 +21,9 @@
 #define IDOCUMENTSCENE_H
 
 #include "ktlinterfacesexport.h"
+
+#include "interfaces/iroutinginformation.h"
+
 #include <QtGui/QGraphicsScene>
 #include <QVariantMap>
 
@@ -29,7 +32,7 @@
 namespace KTechLab {
 
 class IConRouter;
-class IRoutingInformation;
+
 
 /**
  * \short A QGraphicsScene with icons connectable through (complex) routed connections