diff --git a/src/app/tape/dialogs/configpages/tapepreferencespathpage.cpp b/src/app/tape/dialogs/configpages/tapepreferencespathpage.cpp
index e9c42d3e8..9ac1010c9 100644
--- a/src/app/tape/dialogs/configpages/tapepreferencespathpage.cpp
+++ b/src/app/tape/dialogs/configpages/tapepreferencespathpage.cpp
@@ -117,7 +117,7 @@ void TapePreferencesPathPage::EditPath()
     QDir directory(path);
     if (not directory.exists())
     {
-        usedNotExistedDir = directory.mkpath(".");
+        usedNotExistedDir = directory.mkpath(QChar('.'));
     }
 
     const QString dir = QFileDialog::getExistingDirectory(this, tr("Open Directory"), path,
@@ -127,7 +127,7 @@ void TapePreferencesPathPage::EditPath()
         if (usedNotExistedDir)
         {
             QDir directory(path);
-            directory.rmpath(".");
+            directory.rmpath(QChar('.'));
         }
 
         DefaultPath();
diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index 1a07557e7..d8e1c565f 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -413,7 +413,7 @@ void TMainWindow::OpenIndividual()
     QDir directory(pathTo);
     if (not directory.exists())
     {
-        usedNotExistedDir = directory.mkpath(".");
+        usedNotExistedDir = directory.mkpath(QChar('.'));
     }
 
     Open(pathTo, filter);
@@ -421,7 +421,7 @@ void TMainWindow::OpenIndividual()
     if (usedNotExistedDir)
     {
         QDir directory(pathTo);
-        directory.rmpath(".");
+        directory.rmpath(QChar('.'));
     }
 }
 
@@ -465,7 +465,7 @@ void TMainWindow::CreateFromExisting()
     QDir directory(pathTo);
     if (not directory.exists())
     {
-        usedNotExistedDir = directory.mkpath(".");
+        usedNotExistedDir = directory.mkpath(QChar('.'));
     }
 
     const QString mPath = QFileDialog::getOpenFileName(this, tr("Select file"), pathTo, filter);
@@ -485,7 +485,7 @@ void TMainWindow::CreateFromExisting()
     if (usedNotExistedDir)
     {
         QDir directory(pathTo);
-        directory.rmpath(".");
+        directory.rmpath(QChar('.'));
     }
 }
 
@@ -828,13 +828,13 @@ bool TMainWindow::FileSaveAs()
     {
         filters = tr("Individual measurements") + QLatin1String(" (*.vit)");
         suffix = QLatin1String("vit");
-        fName += QLatin1String(".") + suffix;
+        fName += QChar('.') + suffix;
     }
     else
     {
         filters = tr("Multisize measurements") + QLatin1String(" (*.vst)");
         suffix = QLatin1String("vst");
-        fName += QLatin1String(".") + suffix;
+        fName += QChar('.') + suffix;
     }
 
     QString dir;
@@ -859,7 +859,7 @@ bool TMainWindow::FileSaveAs()
     QDir directory(dir);
     if (not directory.exists())
     {
-        usedNotExistedDir = directory.mkpath(".");
+        usedNotExistedDir = directory.mkpath(QChar('.'));
     }
 
     QString fileName = QFileDialog::getSaveFileName(this, tr("Save as"), dir + QLatin1String("/") + fName, filters);
@@ -869,7 +869,7 @@ bool TMainWindow::FileSaveAs()
         if (usedNotExistedDir)
         {
             QDir directory(dir);
-            directory.rmpath(".");
+            directory.rmpath(QChar('.'));
         }
     };
 
@@ -882,7 +882,7 @@ bool TMainWindow::FileSaveAs()
     QFileInfo f( fileName );
     if (f.suffix().isEmpty() && f.suffix() != suffix)
     {
-        fileName += QLatin1String(".") + suffix;
+        fileName += QChar('.') + suffix;
     }
 
     if (QFileInfo::exists(fileName))
@@ -986,7 +986,7 @@ void TMainWindow::ImportDataFromCSV()
     QFileInfo f( fileName );
     if (f.suffix().isEmpty() && f.suffix() != suffix)
     {
-        fileName += QLatin1String(".") + suffix;
+        fileName += QChar('.') + suffix;
     }
 
     DialogExportToCSV dialog(this);
diff --git a/src/app/valentina/core/vapplication.cpp b/src/app/valentina/core/vapplication.cpp
index 998f5ded8..0b8fb5ffb 100644
--- a/src/app/valentina/core/vapplication.cpp
+++ b/src/app/valentina/core/vapplication.cpp
@@ -471,7 +471,7 @@ bool VApplication::CreateLogDir() const
     QDir logDir(LogDirPath());
     if (logDir.exists() == false)
     {
-        return logDir.mkpath("."); // Create directory for log if need
+        return logDir.mkpath(QChar('.')); // Create directory for log if need
     }
     return true;
 }
diff --git a/src/app/valentina/dialogs/configpages/preferencespathpage.cpp b/src/app/valentina/dialogs/configpages/preferencespathpage.cpp
index e7bd64380..0bbc77e9b 100644
--- a/src/app/valentina/dialogs/configpages/preferencespathpage.cpp
+++ b/src/app/valentina/dialogs/configpages/preferencespathpage.cpp
@@ -142,7 +142,7 @@ void PreferencesPathPage::EditPath()
     QDir directory(path);
     if (not directory.exists())
     {
-        usedNotExistedDir = directory.mkpath(".");
+        usedNotExistedDir = directory.mkpath(QChar('.'));
     }
 
     const QString dir = QFileDialog::getExistingDirectory(this, tr("Open Directory"), path,
@@ -157,7 +157,7 @@ void PreferencesPathPage::EditPath()
         if (usedNotExistedDir)
         {
             QDir directory(path);
-            directory.rmpath(".");
+            directory.rmpath(QChar('.'));
         }
         DefaultPath();
         return;
@@ -169,7 +169,7 @@ void PreferencesPathPage::EditPath()
     if (usedNotExistedDir)
     {
         QDir directory(path);
-        directory.rmpath(".");
+        directory.rmpath(QChar('.'));
     }
 }
 
diff --git a/src/app/valentina/dialogs/dialogpatternproperties.cpp b/src/app/valentina/dialogs/dialogpatternproperties.cpp
index 970fcf5c1..38018885c 100644
--- a/src/app/valentina/dialogs/dialogpatternproperties.cpp
+++ b/src/app/valentina/dialogs/dialogpatternproperties.cpp
@@ -880,8 +880,8 @@ void DialogPatternProperties::SaveImage()
     QByteArray byteArray;
     byteArray.append(doc->GetImage().toUtf8());
     QByteArray ba = QByteArray::fromBase64(byteArray);
-    const QString extension = QLatin1String(".") + doc->GetImageExtension();
-    QString filter = tr("Images") + QLatin1String(" (*") + extension + QLatin1String(")");
+    const QString extension = doc->GetImageExtension().prepend(QChar('.'));
+    QString filter = tr("Images") + QStringLiteral(" (*") + extension + QChar(')');
     QString filename = QFileDialog::getSaveFileName(this, tr("Save File"), tr("untitled"), filter, &filter
 #ifdef Q_OS_LINUX
                                                     , QFileDialog::DontUseNativeDialog
diff --git a/src/app/valentina/dialogs/dialogsavelayout.cpp b/src/app/valentina/dialogs/dialogsavelayout.cpp
index 25f6a3709..91185b11c 100644
--- a/src/app/valentina/dialogs/dialogsavelayout.cpp
+++ b/src/app/valentina/dialogs/dialogsavelayout.cpp
@@ -123,7 +123,7 @@ DialogSaveLayout::DialogSaveLayout(int count, Draw mode, const QString &fileName
         QDir directory(dirPath);
         if (not directory.exists())
         {
-            usedNotExistedDir = directory.mkpath(".");
+            usedNotExistedDir = directory.mkpath(QChar('.'));
         }
 
         const QString dir = QFileDialog::getExistingDirectory(this, tr("Select folder"), dirPath,
@@ -141,7 +141,7 @@ DialogSaveLayout::DialogSaveLayout(int count, Draw mode, const QString &fileName
         if (usedNotExistedDir)
         {
             QDir directory(dirPath);
-            directory.rmpath(".");
+            directory.rmpath(QChar('.'));
         }
     });
     connect(ui->lineEditPath, &QLineEdit::textChanged, this, &DialogSaveLayout::PathChanged);
diff --git a/src/app/valentina/mainwindow.cpp b/src/app/valentina/mainwindow.cpp
index da9c7f3c3..2ffda6047 100644
--- a/src/app/valentina/mainwindow.cpp
+++ b/src/app/valentina/mainwindow.cpp
@@ -1675,7 +1675,7 @@ void MainWindow::LoadIndividual()
     QDir directory(path);
     if (not directory.exists())
     {
-        usedNotExistedDir = directory.mkpath(".");
+        usedNotExistedDir = directory.mkpath(QChar('.'));
     }
 
     const QString mPath = QFileDialog::getOpenFileName(this, tr("Open file"), path, filter, nullptr
@@ -1707,7 +1707,7 @@ void MainWindow::LoadIndividual()
     if (usedNotExistedDir)
     {
         QDir directory(path);
-        directory.rmpath(".");
+        directory.rmpath(QChar('.'));
     }
 }
 
@@ -2764,7 +2764,7 @@ bool MainWindow::SaveAs()
     QDir directory(dir);
     if (not directory.exists())
     {
-        usedNotExistedDir = directory.mkpath(".");
+        usedNotExistedDir = directory.mkpath(QChar('.'));
     }
 
     QString fileName = QFileDialog::getSaveFileName(this, tr("Save as"),
@@ -2780,7 +2780,7 @@ bool MainWindow::SaveAs()
         if (usedNotExistedDir)
         {
             QDir directory(dir);
-            directory.rmpath(".");
+            directory.rmpath(QChar('.'));
         }
     };
 
@@ -4932,7 +4932,7 @@ QString MainWindow::CheckPathToMeasurements(const QString &patternPath, const QS
         QDir directory(dirPath);
         if (not directory.exists())
         {
-            usedNotExistedDir = directory.mkpath(".");
+            usedNotExistedDir = directory.mkpath(QChar('.'));
         }
 
         QString mPath;
@@ -4948,7 +4948,7 @@ QString MainWindow::CheckPathToMeasurements(const QString &patternPath, const QS
         if (usedNotExistedDir)
         {
             QDir directory(dirPath);
-            directory.rmpath(".");
+            directory.rmpath(QChar('.'));
         }
 
         return mPath;
diff --git a/src/app/valentina/mainwindowsnogui.cpp b/src/app/valentina/mainwindowsnogui.cpp
index cf418a95c..c67d7219c 100644
--- a/src/app/valentina/mainwindowsnogui.cpp
+++ b/src/app/valentina/mainwindowsnogui.cpp
@@ -79,7 +79,7 @@ bool CreateLayoutPath(const QString &path)
     dir.setPath(path);
     if (not dir.exists(path))
     {
-        usedNotExistedDir = dir.mkpath(".");
+        usedNotExistedDir = dir.mkpath(QChar('.'));
     }
     return usedNotExistedDir;
 }
@@ -90,7 +90,7 @@ void RemoveLayoutPath(const QString &path, bool usedNotExistedDir)
     if (usedNotExistedDir)
     {
         QDir dir(path);
-        dir.rmpath(".");
+        dir.rmpath(QChar('.'));
     }
 }
 }
diff --git a/src/app/valentina/xml/vpattern.cpp b/src/app/valentina/xml/vpattern.cpp
index fcdd2e74a..587a63a0a 100644
--- a/src/app/valentina/xml/vpattern.cpp
+++ b/src/app/valentina/xml/vpattern.cpp
@@ -1338,44 +1338,44 @@ QString VPattern::GetLabelBase(quint32 index) const
         case 0: // de
         {
             const QString al = QStringLiteral("A,Ä,B,C,D,E,F,G,H,I,J,K,L,M,N,O,Ö,P,Q,R,S,ß,T,U,Ü,V,W,X,Y,Z");
-            alphabet = al.split(",");
+            alphabet = al.split(QChar(','));
             break;
         }
         case 2: // fr
         {
             const QString al = QStringLiteral("A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z");
-            alphabet = al.split(",");
+            alphabet = al.split(QChar(','));
             break;
         }
         case 3: // ru
         {
             const QString al = QStringLiteral("А,Б,В,Г,Д,Е,Ж,З,И,К,Л,М,Н,О,П,Р,С,Т,У,Ф,Х,Ц,Ч,Ш,Щ,Э,Ю,Я");
-            alphabet = al.split(",");
+            alphabet = al.split(QChar(','));
             break;
         }
         case 4: // uk
         {
             const QString al = QStringLiteral("А,Б,В,Г,Д,Е,Ж,З,І,Ї,Й,К,Л,М,Н,О,П,Р,С,Т,У,Ф,Х,Ц,Ч,Ш,Щ,Є,Ю,Я");
-            alphabet = al.split(",");
+            alphabet = al.split(QChar(','));
             break;
         }
         case 5: // hr
         case 7: // bs
         {
             const QString al = QStringLiteral("A,B,C,Č,Ć,D,Dž,Ð,E,F,G,H,I,J,K,L,Lj,M,N,Nj,O,P,R,S,Š,T,U,V,Z,Ž");
-            alphabet = al.split(",");
+            alphabet = al.split(QChar(','));
             break;
         }
         case 6: // sr
         {
             const QString al = QStringLiteral("А,Б,В,Г,Д,Ђ,Е,Ж,З,И,Ј,К,Л,Љ,М,Н,Њ,О,П,Р,С,Т,Ћ,У,Ф,Х,Ц,Ч,Џ,Ш");
-            alphabet = al.split(",");
+            alphabet = al.split(QChar(','));
             break;
         }
         case 1: // en
         default: // en
         {
-            alphabet = def.split(",");
+            alphabet = def.split(QChar(','));
             break;
         }
     }
diff --git a/src/libs/ifc/xml/vabstractconverter.cpp b/src/libs/ifc/xml/vabstractconverter.cpp
index 7a2f85906..414271726 100644
--- a/src/libs/ifc/xml/vabstractconverter.cpp
+++ b/src/libs/ifc/xml/vabstractconverter.cpp
@@ -125,7 +125,7 @@ int VAbstractConverter::GetVersion(const QString &version)
 {
     ValidateVersion(version);
 
-    const QStringList ver = version.split(".");
+    const QStringList ver = version.split(QChar('.'));
 
     bool ok = false;
     const int major = ver.at(0).toInt(&ok);
diff --git a/src/libs/ifc/xml/vdomdocument.cpp b/src/libs/ifc/xml/vdomdocument.cpp
index 01c559297..c8e4ec016 100644
--- a/src/libs/ifc/xml/vdomdocument.cpp
+++ b/src/libs/ifc/xml/vdomdocument.cpp
@@ -483,7 +483,7 @@ qreal VDomDocument::GetParametrDouble(const QDomElement &domElement, const QStri
     try
     {
         QString parametr = GetParametrString(domElement, name, defValue);
-        param = parametr.replace(",", ".").toDouble(&ok);
+        param = parametr.replace(QChar(','), QChar('.')).toDouble(&ok);
         if (ok == false)
         {
             throw VExceptionConversionError(message, name);
@@ -764,7 +764,7 @@ bool VDomDocument::SaveDocument(const QString &fileName, QString &error)
 QString VDomDocument::Major() const
 {
     QString version = UniqueTagText(TagVersion, "0.0.0");
-    QStringList v = version.split(".");
+    QStringList v = version.split(QChar('.'));
     return v.at(0);
 }
 
@@ -773,7 +773,7 @@ QString VDomDocument::Major() const
 QString VDomDocument::Minor() const
 {
     QString version = UniqueTagText(TagVersion, "0.0.0");
-    QStringList v = version.split(".");
+    QStringList v = version.split(QChar('.'));
     return v.at(1);
 }
 
@@ -782,7 +782,7 @@ QString VDomDocument::Minor() const
 QString VDomDocument::Patch() const
 {
     QString version = UniqueTagText(TagVersion, "0.0.0");
-    QStringList v = version.split(".");
+    QStringList v = version.split(QChar('.'));
     return v.at(2);
 }
 
diff --git a/src/libs/vmisc/projectversion.cpp b/src/libs/vmisc/projectversion.cpp
index 6d60eb340..b2d4c9d6d 100644
--- a/src/libs/vmisc/projectversion.cpp
+++ b/src/libs/vmisc/projectversion.cpp
@@ -71,7 +71,7 @@ QString compilerString()
         iccVersion = QLatin1String(__INTEL_COMPILER);
     }
 #ifdef __INTEL_COMPILER_UPDATE
-    return QLatin1String("Intel(R) C++ ") + iccVersion + QLatin1String(".") + QLatin1String(__INTEL_COMPILER_UPDATE) +
+    return QLatin1String("Intel(R) C++ ") + iccVersion + QChar('.') + QLatin1String(__INTEL_COMPILER_UPDATE) +
            QLatin1String(" build ") + QLatin1String(__INTEL_COMPILER_BUILD_DATE) + QLatin1String(" [") +
            QLatin1String(iccCompact) + QLatin1String(" compatibility]");
 #else
diff --git a/src/libs/vmisc/vcommonsettings.cpp b/src/libs/vmisc/vcommonsettings.cpp
index e4f83e00f..bda206d1f 100644
--- a/src/libs/vmisc/vcommonsettings.cpp
+++ b/src/libs/vmisc/vcommonsettings.cpp
@@ -213,7 +213,7 @@ QString PrepareStandardFiles(const QString &currentPath, const QString &standard
     if ((currentPath == defPath || not currentPathDir.exists()) && standardPathDir.exists())
     {
         const QDir localdata (defPath);
-        if (localdata.mkpath("."))
+        if (localdata.mkpath(QChar('.')))
         {
             SymlinkCopyDirRecursive(standardPath, defPath, false);
         }
@@ -885,7 +885,7 @@ double VCommonSettings::GetDefaultSeamAllowance()
     {
         qDebug()<< "Could not convert value"<<value(*settingPatternDefaultSeamAllowance, 0)
                 << "to real. Return default value for default seam allowance is "
-                << defaultValue << ".";
+                << defaultValue << QChar('.');
         val = defaultValue;
     }
 
diff --git a/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.cpp b/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.cpp
index 1eceddbcc..403018cc0 100644
--- a/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.cpp
+++ b/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.cpp
@@ -129,7 +129,7 @@ VPE::VProperty* VPE::QVector3DProperty::clone(bool include_children, VProperty*
 
 void VPE::QVector3DProperty::setValue(const QVariant &value)
 {
-    QStringList tmpStrings = value.toString().split(",");
+    QStringList tmpStrings = value.toString().split(QChar(','));
     if (tmpStrings.count() == 3)
     {
         setVector(tmpStrings[0].toDouble(), tmpStrings[1].toDouble(), tmpStrings[2].toDouble());
diff --git a/src/libs/vwidgets/vabstractmainwindow.cpp b/src/libs/vwidgets/vabstractmainwindow.cpp
index 1d85b3e9a..7a19e720f 100644
--- a/src/libs/vwidgets/vabstractmainwindow.cpp
+++ b/src/libs/vwidgets/vabstractmainwindow.cpp
@@ -104,7 +104,7 @@ QString VAbstractMainWindow::CSVFilePath()
 {
     const QString filters = tr("Comma-Separated Values") + QLatin1String(" (*.csv)");
     const QString suffix("csv");
-    const QString path = QDir::homePath()  + QLatin1String("/") + tr("values") + QLatin1String(".") + suffix;
+    const QString path = QDir::homePath() + QChar('/') + tr("values") + QChar('.') + suffix;
 
     QString fileName = QFileDialog::getSaveFileName(this, tr("Export to CSV"), path, filters, nullptr
 #ifdef Q_OS_LINUX
@@ -120,7 +120,7 @@ QString VAbstractMainWindow::CSVFilePath()
     QFileInfo f( fileName );
     if (f.suffix().isEmpty() && f.suffix() != suffix)
     {
-        fileName += QLatin1String(".") + suffix;
+        fileName += QChar('.') + suffix;
     }
 
     return fileName;
diff --git a/src/test/ValentinaTest/tst_readval.cpp b/src/test/ValentinaTest/tst_readval.cpp
index 88a3ddae4..b6b6d64cc 100644
--- a/src/test/ValentinaTest/tst_readval.cpp
+++ b/src/test/ValentinaTest/tst_readval.cpp
@@ -96,8 +96,8 @@ void TST_ReadVal::TestInvalidData_data()
     PrepareString(QString("1,0,00.5"), locale);
     PrepareString(QString("1,,000.5"), locale);
     PrepareString(QString(",5"), locale);
-    PrepareString(QString(","), locale);
-    PrepareString(QString("."), locale);
+    PrepareString(QChar(','), locale);
+    PrepareString(QChar('.'), locale);
 }
 
 //---------------------------------------------------------------------------------------------------------------------