diff --git a/src/convertworker.cpp b/src/convertworker.cpp
index d3b597c..ab682d7 100644
--- a/src/convertworker.cpp
+++ b/src/convertworker.cpp
@@ -193,9 +193,9 @@ try {
         qDebug() << "Unsupported paper size" << PaperSize;
         throw ConvertFailedException(tr("Unsupported paper size"));
     }
-    QPair<float,float> wh = PaperSizes[PaperSize];
-    quint32 Width = qRound(wh.first/25.4*HwResX);
-    quint32 Height = qRound(wh.second/25.4*HwResY);
+    QSizeF size = PaperSizes[PaperSize];
+    quint32 Width = qRound(size.width()/25.4*HwResX);
+    quint32 Height = qRound(size.height()/25.4*HwResY);
 
     qDebug() << "Size is" << Width << "x" << Height;
 
@@ -228,7 +228,7 @@ try {
         tmpPdfFile.open();
         QPdfWriter pdfWriter(tmpPdfFile.fileName());
         pdfWriter.setCreator("SeaPrint " SEAPRINT_VERSION);
-        QPageSize pageSize(QSizeF {wh.first, wh.second}, QPageSize::Millimeter);
+        QPageSize pageSize(size, QPageSize::Millimeter);
         pdfWriter.setPageSize(pageSize);
         pdfWriter.setResolution(HwResX);
         QPainter painter(&pdfWriter);
@@ -452,7 +452,7 @@ try {
         qDebug() << "Unsupported paper size" << PaperSize;
         throw ConvertFailedException(tr("Unsupported paper size"));
     }
-    QPair<float,float> wh = PaperSizes[PaperSize];
+    QSizeF size = PaperSizes[PaperSize];
 
     QFile inFile(filename);
     if(!inFile.open(QIODevice::ReadOnly))
@@ -467,7 +467,7 @@ try {
 
     QPdfWriter pdfWriter(tmpPdfFile.fileName());
     pdfWriter.setCreator("SeaPrint " SEAPRINT_VERSION);
-    QPageSize pageSize(QSizeF {wh.first, wh.second}, QPageSize::Millimeter);
+    QPageSize pageSize(size, QPageSize::Millimeter);
     pdfWriter.setPageSize(pageSize);
     pdfWriter.setResolution(resolution);
 
diff --git a/src/ippprinter.cpp b/src/ippprinter.cpp
index c4d6d5a..94689a4 100644
--- a/src/ippprinter.cpp
+++ b/src/ippprinter.cpp
@@ -521,8 +521,8 @@ void IppPrinter::print(QJsonObject jobAttrs, QString filename)
             return;
         }
 
-        int x = PaperSizes[PaperSize].first*100;
-        int y = PaperSizes[PaperSize].second*100;
+        int x = PaperSizes[PaperSize].width()*100;
+        int y = PaperSizes[PaperSize].height()*100;
 
         QJsonObject Dimensions =
             {{"tag", IppMsg::BeginCollection},
diff --git a/src/papersizes.h b/src/papersizes.h
index a13fbe7..a37f1a7 100644
--- a/src/papersizes.h
+++ b/src/papersizes.h
@@ -1,9 +1,9 @@
 #ifndef PAPERSIZES_H
 #define PAPERSIZES_H
 #include <QMap>
-#include <QPair>
+#include <QSizeF>
 
-static QMap<QString, QPair<float,float>> PaperSizes =
+static QMap<QString, QSizeF> PaperSizes =
    {{"asme_f_28x40in",               {711.20,   1016.00}},
     {"iso_2a0_1189x1682mm",          {1189.00,  1682.00}},
     {"iso_a0_841x1189mm",            {841.00,   1189.00}},