diff --git a/q3DMASCDisclaimerDialog.h b/q3DMASCDisclaimerDialog.h
index 873fa15..945d5ba 100644
--- a/q3DMASCDisclaimerDialog.h
+++ b/q3DMASCDisclaimerDialog.h
@@ -25,7 +25,7 @@
 #include <ccMainAppInterface.h>
 
 //Qt
-#include <QMainwindow>
+#include <QMainWindow>
 
 //! Dialog for displaying the 3DSMAC/UEB disclaimer
 class TrainDisclaimerDialog : public QDialog, public Ui::TrainDisclaimerDialog