diff --git a/src/app/tape/dialogs/dialogabouttape.cpp b/src/app/tape/dialogs/dialogabouttape.cpp
index b3f45edd9..808c6a338 100644
--- a/src/app/tape/dialogs/dialogabouttape.cpp
+++ b/src/app/tape/dialogs/dialogabouttape.cpp
@@ -47,7 +47,7 @@ DialogAboutTape::DialogAboutTape(QWidget *parent)
 {
     ui->setupUi(this);
 
-    //mApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    //mApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     RetranslateUi();
     connect(ui->pushButton_Web_Site, &QPushButton::clicked, [this]()
@@ -126,7 +126,7 @@ void DialogAboutTape::RetranslateUi()
     ui->labelBuildRevision->setText(tr("Build revision: %1").arg(BUILD_REVISION));
     ui->label_QT_Version->setText(buildCompatibilityString());
 
-    const QDate date = QLocale(QLocale::C).toDate(QString(__DATE__).simplified(), QLatin1String("MMM d yyyy"));
+    const QDate date = QLocale::c().toDate(QString(__DATE__).simplified(), QLatin1String("MMM d yyyy"));
     ui->label_Tape_Built->setText(tr("Built on %1 at %2").arg(date.toString()).arg(__TIME__));
 
     ui->label_Legal_Stuff->setText(QApplication::translate("InternalStrings",
diff --git a/src/app/tape/dialogs/tapeconfigdialog.cpp b/src/app/tape/dialogs/tapeconfigdialog.cpp
index ca20cd121..833761b46 100644
--- a/src/app/tape/dialogs/tapeconfigdialog.cpp
+++ b/src/app/tape/dialogs/tapeconfigdialog.cpp
@@ -105,7 +105,7 @@ TapeConfigDialog::TapeConfigDialog(QWidget *parent)
 
     setWindowTitle(tr("Config Dialog"));
 
-    qApp->TapeSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->TapeSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -201,7 +201,7 @@ void TapeConfigDialog::Apply()
         default:
             break;
     }
-    qApp->TapeSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->TapeSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
     emit UpdateProperties();
     setResult(QDialog::Accepted);
 }
diff --git a/src/app/valentina/dialogs/configdialog.cpp b/src/app/valentina/dialogs/configdialog.cpp
index 339107245..75be4fd14 100644
--- a/src/app/valentina/dialogs/configdialog.cpp
+++ b/src/app/valentina/dialogs/configdialog.cpp
@@ -94,7 +94,7 @@ ConfigDialog::ConfigDialog(QWidget *parent) :
 
     setWindowTitle(tr("Config Dialog"));
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -208,7 +208,7 @@ void ConfigDialog::Apply()
         default:
             break;
     }
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
     emit UpdateProperties();
     setResult(QDialog::Accepted);
 }
diff --git a/src/app/valentina/dialogs/dialogaboutapp.cpp b/src/app/valentina/dialogs/dialogaboutapp.cpp
index e0cdeca31..1e5c3683d 100644
--- a/src/app/valentina/dialogs/dialogaboutapp.cpp
+++ b/src/app/valentina/dialogs/dialogaboutapp.cpp
@@ -45,13 +45,13 @@ DialogAboutApp::DialogAboutApp(QWidget *parent) :
 {
     ui->setupUi(this);
 
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     ui->label_Valentina_Version->setText(QString("Valentina %1").arg(APP_VERSION_STR));
     ui->labelBuildRevision->setText(QString("Build revision: %1").arg(BUILD_REVISION));
     ui->label_QT_Version->setText(buildCompatibilityString());
 
-    QDate date = QLocale(QLocale::C).toDate(QString(__DATE__).simplified(), QLatin1String("MMM d yyyy"));
+    QDate date = QLocale::c().toDate(QString(__DATE__).simplified(), QLatin1String("MMM d yyyy"));
     ui->label_Valentina_Built->setText(tr("Built on %1 at %2").arg(date.toString()).arg(__TIME__));
 
     ui->label_Legal_Stuff->setText(QApplication::translate("InternalStrings",
diff --git a/src/app/valentina/dialogs/dialoghistory.cpp b/src/app/valentina/dialogs/dialoghistory.cpp
index 64a069de1..beab2bedb 100644
--- a/src/app/valentina/dialogs/dialoghistory.cpp
+++ b/src/app/valentina/dialogs/dialoghistory.cpp
@@ -53,7 +53,7 @@ DialogHistory::DialogHistory(VContainer *data, VPattern *doc, QWidget *parent)
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     bOk = ui->buttonBox->button(QDialogButtonBox::Ok);
     connect(bOk, &QPushButton::clicked, this, &DialogHistory::DialogAccepted);
diff --git a/src/app/valentina/dialogs/dialogincrements.cpp b/src/app/valentina/dialogs/dialogincrements.cpp
index 7b07dc8b4..614f7f720 100644
--- a/src/app/valentina/dialogs/dialogincrements.cpp
+++ b/src/app/valentina/dialogs/dialogincrements.cpp
@@ -75,7 +75,7 @@ DialogIncrements::DialogIncrements(VContainer *data, VPattern *doc, QWidget *par
     formulaBaseHeight = ui->plainTextEditFormula->height();
     ui->plainTextEditFormula->installEventFilter(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     qCDebug(vDialog, "Showing variables.");
     ShowUnits();
diff --git a/src/app/valentina/dialogs/dialoglayoutprogress.cpp b/src/app/valentina/dialogs/dialoglayoutprogress.cpp
index d7de471bd..2419403f5 100644
--- a/src/app/valentina/dialogs/dialoglayoutprogress.cpp
+++ b/src/app/valentina/dialogs/dialoglayoutprogress.cpp
@@ -42,7 +42,7 @@ DialogLayoutProgress::DialogLayoutProgress(int count, QWidget *parent)
 {
     ui->setupUi(this);
 
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     ui->progressBar->setMaximum(maxCount);
     ui->progressBar->setValue(0);
diff --git a/src/app/valentina/dialogs/dialoglayoutsettings.cpp b/src/app/valentina/dialogs/dialoglayoutsettings.cpp
index 8ad40ce3c..fdd8d5e9d 100644
--- a/src/app/valentina/dialogs/dialoglayoutsettings.cpp
+++ b/src/app/valentina/dialogs/dialoglayoutsettings.cpp
@@ -60,7 +60,7 @@ DialogLayoutSettings::DialogLayoutSettings(VLayoutGenerator *generator, QWidget
 {
     ui->setupUi(this);
 
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     //moved from ReadSettings - well...it seems it can be done once only (i.e. constructor) because Init funcs dont
     //even cleanse lists before adding
diff --git a/src/app/valentina/dialogs/dialognewpattern.cpp b/src/app/valentina/dialogs/dialognewpattern.cpp
index fcf9b8334..fa7e4882a 100644
--- a/src/app/valentina/dialogs/dialognewpattern.cpp
+++ b/src/app/valentina/dialogs/dialognewpattern.cpp
@@ -49,7 +49,7 @@ DialogNewPattern::DialogNewPattern(VContainer *data, const QString &patternPiece
     ui->lineEditName->setClearButtonEnabled(true);
 #endif
 
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     QRect position = this->frameGeometry();
     position.moveCenter(QDesktopWidget().availableGeometry().center());
diff --git a/src/app/valentina/dialogs/dialogpatternproperties.cpp b/src/app/valentina/dialogs/dialogpatternproperties.cpp
index 9e3fe361b..89c3afcc1 100644
--- a/src/app/valentina/dialogs/dialogpatternproperties.cpp
+++ b/src/app/valentina/dialogs/dialogpatternproperties.cpp
@@ -71,7 +71,7 @@ DialogPatternProperties::DialogPatternProperties(const QString &filePath, VPatte
 
     SCASSERT(doc != nullptr);
 
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     if (m_filePath.isEmpty())
     {
diff --git a/src/app/valentina/dialogs/dialogpatternxmledit.cpp b/src/app/valentina/dialogs/dialogpatternxmledit.cpp
index ae2dcd356..d2509f6e1 100644
--- a/src/app/valentina/dialogs/dialogpatternxmledit.cpp
+++ b/src/app/valentina/dialogs/dialogpatternxmledit.cpp
@@ -46,7 +46,7 @@ DialogPatternXmlEdit::DialogPatternXmlEdit(QWidget *parent, VPattern *xmldoc)
 {
     ui->setupUi(this);
 
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     this->xmlmodel = new VXMLTreeView();
     this->doc=xmldoc;
diff --git a/src/app/valentina/dialogs/dialogsavelayout.cpp b/src/app/valentina/dialogs/dialogsavelayout.cpp
index f52e30881..f4cb267cd 100644
--- a/src/app/valentina/dialogs/dialogsavelayout.cpp
+++ b/src/app/valentina/dialogs/dialogsavelayout.cpp
@@ -55,7 +55,7 @@ DialogSaveLayout::DialogSaveLayout(int count, const QString &fileName, QWidget *
     ui->lineEditFileName->setClearButtonEnabled(true);
 #endif
 
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     QPushButton *bOk = ui->buttonBox->button(QDialogButtonBox::Ok);
     SCASSERT(bOk != nullptr);
diff --git a/src/app/valentina/mainwindow.cpp b/src/app/valentina/mainwindow.cpp
index 3c2d2612f..b6d2c79ed 100644
--- a/src/app/valentina/mainwindow.cpp
+++ b/src/app/valentina/mainwindow.cpp
@@ -3914,7 +3914,7 @@ QStringList MainWindow::GetUnlokedRestoreFileList() const
 //---------------------------------------------------------------------------------------------------------------------
 void MainWindow::WindowsLocale()
 {
-    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vmisc/vabstractapplication.h b/src/libs/vmisc/vabstractapplication.h
index 333540d2c..e311d7615 100644
--- a/src/libs/vmisc/vabstractapplication.h
+++ b/src/libs/vmisc/vabstractapplication.h
@@ -157,7 +157,7 @@ template <typename T>
 inline QString VAbstractApplication::LocaleToString(const T &value)
 {
     QLocale loc;
-    qApp->Settings()->GetOsSeparator() ? loc = QLocale::system() : loc = QLocale(QLocale::C);
+    qApp->Settings()->GetOsSeparator() ? loc = QLocale::system() : loc = QLocale::c();
     return loc.toString(value);
 }
 
diff --git a/src/libs/vpatterndb/vtranslatevars.cpp b/src/libs/vpatterndb/vtranslatevars.cpp
index ed994d762..0ec2efa96 100644
--- a/src/libs/vpatterndb/vtranslatevars.cpp
+++ b/src/libs/vpatterndb/vtranslatevars.cpp
@@ -779,7 +779,7 @@ QString VTranslateVars::FormulaFromUser(const QString &formula, bool osSeparator
     }
 
     QLocale loc = QLocale::system(); // User locale
-    if (loc != QLocale(QLocale::C) && osSeparator)
+    if (loc != QLocale::c() && osSeparator)
     {// User want use Os separator
         QList<int> nKeys = numbers.keys();// Positions for all numbers in expression
         QList<QString> nValues = numbers.values();
@@ -794,7 +794,7 @@ QString VTranslateVars::FormulaFromUser(const QString &formula, bool osSeparator
                 continue;//Leave with out translation
             }
 
-            loc = QLocale(QLocale::C);// To internal locale
+            loc = QLocale::c();// To internal locale
             const QString dStr = loc.toString(d);// Internal look for number
             newFormula.replace(nKeys.at(i), nValues.at(i).length(), dStr);
             const int bias = nValues.at(i).length() - dStr.length();
@@ -922,7 +922,7 @@ QString VTranslateVars::FormulaToUser(const QString &formula, bool osSeparator)
         QList<QString> nValues = numbers.values();
         for (int i = 0; i < nKeys.size(); ++i)
         {
-            loc = QLocale(QLocale::C);// From pattern locale
+            loc = QLocale::c();// From pattern locale
             bool ok = false;
             const qreal d = loc.toDouble(nValues.at(i), &ok);
             if (ok == false)
diff --git a/src/libs/vtools/dialogs/support/dialogundo.cpp b/src/libs/vtools/dialogs/support/dialogundo.cpp
index b5136d9c4..b1c9ae6c7 100644
--- a/src/libs/vtools/dialogs/support/dialogundo.cpp
+++ b/src/libs/vtools/dialogs/support/dialogundo.cpp
@@ -46,7 +46,7 @@ DialogUndo::DialogUndo(QWidget *parent)
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 
     bool opening = qApp->getOpeningPattern();
     if (opening)
diff --git a/src/libs/vtools/dialogs/tools/dialogtool.h b/src/libs/vtools/dialogs/tools/dialogtool.h
index 557878c5a..48df6e3d6 100644
--- a/src/libs/vtools/dialogs/tools/dialogtool.h
+++ b/src/libs/vtools/dialogs/tools/dialogtool.h
@@ -342,7 +342,7 @@ inline void DialogTool::InitOkCancel(T *ui)
     SCASSERT(bCancel != nullptr);
     connect(bCancel, &QPushButton::clicked, this, &DialogTool::DialogRejected);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale::c());
 }
 
 //---------------------------------------------------------------------------------------------------------------------