diff --git a/userspace/main.cpp b/userspace/main.cpp
index 1941cbb..572dc8e 100644
--- a/userspace/main.cpp
+++ b/userspace/main.cpp
@@ -5,7 +5,6 @@
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
-    QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
     MainWindow w;
     w.show();
     
diff --git a/userspace/qcustomplot.cpp b/userspace/qcustomplot.cpp
index 09b6a64..59a5f75 100644
--- a/userspace/qcustomplot.cpp
+++ b/userspace/qcustomplot.cpp
@@ -4084,7 +4084,7 @@ void QCPAxis::setNumberFormat(const QString &formatCode)
   QString allowedFormatChars = "eEfgG";
   if (allowedFormatChars.contains(formatCode.at(0)))
   {
-    mNumberFormatChar = formatCode.at(0).toAscii();
+    mNumberFormatChar = formatCode.at(0).toLatin1();
   } else
   {
     qDebug() << Q_FUNC_INFO << "Invalid number format code (first char not in 'eEfgG'):" << formatCode;
diff --git a/userspace/userspace.pro b/userspace/userspace.pro
index d5d8270..2c5df21 100644
--- a/userspace/userspace.pro
+++ b/userspace/userspace.pro
@@ -5,6 +5,7 @@
 #-------------------------------------------------
 
 QT       += core gui
+QT       += printsupport
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets