diff --git a/src/libs/vwidgets/vabstractmainwindow.h b/src/libs/vwidgets/vabstractmainwindow.h
index b1a2f1365..6639874e6 100644
--- a/src/libs/vwidgets/vabstractmainwindow.h
+++ b/src/libs/vwidgets/vabstractmainwindow.h
@@ -35,7 +35,7 @@
 #include <QObject>
 #include <QString>
 
-class VFinalMeasurement;
+struct VFinalMeasurement;
 
 class VAbstractMainWindow : public QMainWindow
 {