diff --git a/src/gui/painting/qpagesize.h b/src/gui/painting/qpagesize.h
index 72d24ed9380..f4e7af0f6c5 100644
--- a/src/gui/painting/qpagesize.h
+++ b/src/gui/painting/qpagesize.h
@@ -224,7 +224,7 @@ public:
     };
 
     QPageSize();
-    explicit QPageSize(PageSizeId pageSizeId);
+    Q_IMPLICIT QPageSize(PageSizeId pageSizeId);
     explicit QPageSize(const QSize &pointSize,
                        const QString &name = QString(),
                        SizeMatchPolicy matchPolicy = FuzzyMatch);