diff --git a/src/gui/painting/qpagesize.cpp b/src/gui/painting/qpagesize.cpp
index 3ed633bf992..4c453c830fc 100644
--- a/src/gui/painting/qpagesize.cpp
+++ b/src/gui/painting/qpagesize.cpp
@@ -543,7 +543,7 @@ static QSize qt_convertPointsToPixels(const QSize &size, int resolution)
     if (!size.isValid() || resolution <= 0)
         return QSize();
     const qreal multiplier = qt_pixelMultiplier(resolution);
-    return QSize(qRound(size.width() / multiplier), qRound(size.height() / multiplier));
+    return QSize(qFloor(size.width() / multiplier), qFloor(size.height() / multiplier));
 }
 
 static QSizeF qt_convertPointsToUnits(const QSize &size, QPageSize::Unit units)
diff --git a/tests/auto/gui/painting/qpagesize/tst_qpagesize.cpp b/tests/auto/gui/painting/qpagesize/tst_qpagesize.cpp
index bac7e9cdf81..bfcd4d7691f 100644
--- a/tests/auto/gui/painting/qpagesize/tst_qpagesize.cpp
+++ b/tests/auto/gui/painting/qpagesize/tst_qpagesize.cpp
@@ -49,11 +49,13 @@ void tst_QPageSize::basics()
     QCOMPARE(a4.size(QPageSize::Pica), QSizeF(49.58, 70.17));
     QCOMPARE(a4.sizePoints(), QSize(595, 842));
     QCOMPARE(a4.sizePixels(72), QSize(595, 842));
+    QCOMPARE(a4.sizePixels(600), QSize(4958, 7016)); // Rounded down
     QCOMPARE(a4.rect(QPageSize::Millimeter), QRectF(0, 0, 210, 297));
     QCOMPARE(a4.rect(QPageSize::Inch), QRectF(0, 0, 8.27, 11.69));
     QCOMPARE(a4.rect(QPageSize::Pica), QRectF(0, 0, 49.58, 70.17));
     QCOMPARE(a4.rectPoints(), QRect(0, 0, 595, 842));
     QCOMPARE(a4.rectPixels(72), QRect(0, 0, 595, 842));
+    QCOMPARE(a4.rectPixels(600), QRect(0, 0, 4958, 7016)); // Rounded down
 
     // Simple QPageSize::PaperSizeId later in list
     QPageSize folio = QPageSize(QPageSize::Folio);