diff --git a/QXlsx/header/xlsxworkbook_p.h b/QXlsx/header/xlsxworkbook_p.h
index 92f7c05..262b0eb 100644
--- a/QXlsx/header/xlsxworkbook_p.h
+++ b/QXlsx/header/xlsxworkbook_p.h
@@ -5,7 +5,6 @@
 
 #include <QtGlobal>
 #include <QSharedPointer>
-#include <QPair>
 #include <QStringList>
 
 #include "xlsxworkbook.h"