diff --git a/colorstxtwizard.h b/colorstxtwizard.h
index 6314ebe..4d2f86a 100644
--- a/colorstxtwizard.h
+++ b/colorstxtwizard.h
@@ -53,7 +53,7 @@ class TextureFoldersPage : public QWizardPage
 public:
     TextureFoldersPage(QWidget *parent = nullptr);
 
-    bool isComplete(void) const;
+    bool isComplete() const;
 private slots:
     void add();
     void rem();
@@ -87,7 +87,7 @@ class ConclusionPage : public QWizardPage
 public:
     ConclusionPage(QWidget *parent = nullptr);
 
-    bool isComplete(void) const override;
+    bool isComplete() const override;
 protected:
     void initializePage() override;
 
diff --git a/configdialog.h b/configdialog.h
index 9bd31b8..f2cad34 100644
--- a/configdialog.h
+++ b/configdialog.h
@@ -16,13 +16,13 @@ struct ConfigSettings
 {
     QString mapperPath;
 
-    static QStringList getMapperExecutables(void);
-    static QString getDefaultMapperExecutable(void);
+    static QStringList getMapperExecutables();
+    static QString getDefaultMapperExecutable();
     static const QString defaultMapperExecutableName;
     static QStringList predefinedMapperLocations;
 
 private:
-    struct InitStatics { InitStatics(void); };
+    struct InitStatics { InitStatics(); };
     static const InitStatics initStatics;
     friend struct InitStatics;
 
diff --git a/drawmapfigure.h b/drawmapfigure.h
index 7dad7a3..d124e8f 100644
--- a/drawmapfigure.h
+++ b/drawmapfigure.h
@@ -44,12 +44,12 @@ public:
         QObject(parent), geometry(geometry), color(color) { }
 
     //DrawMapFigure(const DrawMapFigure &f) {}
-    bool requiresPoint(void) const;
-    bool requiresGeometry(void) const;
-    bool requiresText(void) const;
+    bool requiresPoint() const;
+    bool requiresGeometry() const;
+    bool requiresText() const;
 
-    QString getString(void) const;
-    QStringList getSplittedString(void) const;
+    QString getString() const;
+    QStringList getSplittedString() const;
     bool getUseImageCoordinates() const;
 
     int getFigureIndex() const;
diff --git a/drawmapfiguretablemodel.h b/drawmapfiguretablemodel.h
index d12385d..d966f6b 100644
--- a/drawmapfiguretablemodel.h
+++ b/drawmapfiguretablemodel.h
@@ -38,8 +38,8 @@ public:
     bool removeRows(int position, int count, const QModelIndex &parent = QModelIndex()) override;
     bool removeColumns(int column, int count, const QModelIndex &parent = QModelIndex()) override;
 
-    QStringList getStringList(void) const;
-    QStringList getArguments(void) const;
+    QStringList getStringList() const;
+    QStringList getArguments() const;
     void insertStringList(const QStringList &other);
 
 private:
diff --git a/geometry.h b/geometry.h
index dd67faf..8bd70ab 100644
--- a/geometry.h
+++ b/geometry.h
@@ -32,13 +32,13 @@ public:
     int dimension[2];
     int corner[2][2];
 
-    Geometry(void) { setMax(); }
+    Geometry() { setMax(); }
     Geometry(const char *s) { set(s); }
     Geometry(const QString &s) { set(s); }
     // Geometry(const Geometry &g);
 
     Geometry::Format set(const QString &str);
-    void setMax(void);
+    void setMax();
     void setCenterDimensions(int cx, int cy, int dx, int dy);
     void setCornerDimensions(int cx, int cy, int dx, int dy);
     void setCorners(int c0x, int c0y, int c1x, int c1y);
@@ -49,11 +49,11 @@ private:
     static const QRegularExpression centerDimension;
     static const QRegularExpression cornerDimension;
     static const QRegularExpression cornerDimensionAlternate;
-    bool adjustCorners(void);
+    bool adjustCorners();
     void computeCorner0(void);
-    void computeCorner1(void);
+    void computeCorner1();
     void computeCenter(void); // Depends dimensions to be correct !
-    void computeDimensions(void);
+    void computeDimensions();
 
     Format format = FormatNone;
 };
diff --git a/geometrywidget.h b/geometrywidget.h
index 79d47cc..858be2e 100644
--- a/geometrywidget.h
+++ b/geometrywidget.h
@@ -24,13 +24,13 @@ public:
     ~GeometryWidget();
 
     bool set(const QString& geomStr, Geometry::Format format = Geometry::FormatUnknown); //{ return set(geomStr.toStdString().c_str(), format); }
-    bool setDefault(void) { return set(""); }
+    bool setDefault() { return set(""); }
     bool setFormat(int i) { return setFormat(static_cast<Geometry::Format>(i)); }
     bool setFormat(Geometry::Format format);
     bool setFormat(QString formatStr) { return setFormat(Geometry::formatId(formatStr)); }
-    Geometry::Format getFormat(void) const;
-    QString getFormatStr(void) { return Geometry::formatName(getFormat()); }
-    QString getGeometry(void) const;
+    Geometry::Format getFormat() const;
+    QString getFormatStr() { return Geometry::formatName(getFormat()); }
+    QString getGeometry() const;
 
 private slots:
     void on_geometryFormat_currentIndexChanged(int index);
@@ -55,7 +55,7 @@ private:
     QSpinBox *m_ui_C0D_dimension[2];
     QSpinBox *m_ui_C01_corner[2][2];
 signals:
-    void editingFinished(void);
+    void editingFinished();
 
 };
 
diff --git a/mainwindow.h b/mainwindow.h
index da2d128..0fda78c 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -73,7 +73,7 @@ private slots:
     QString getOutputFileName();
     void on_button_generate_clicked();
     void readError(const QString &str);
-    void mapperInitialized(void);
+    void mapperInitialized();
     void mapperFinisched(int exit);
     void error(QProcess::ProcessError error);
     void createProfilesMenu();
@@ -149,10 +149,10 @@ private:
     #endif
     ConfigSettings currentSettings;
 
-    void finishUiInitialisation(void);
+    void finishUiInitialisation();
 
     // creates the language menu dynamically from the content of m_langPath
-    void createLanguageMenu(void);
+    void createLanguageMenu();
 
     Translator *translator; // contains the translations for this application
     QString currentProfile; //contains the name of current loaded profile
diff --git a/minetestmapperexe.h b/minetestmapperexe.h
index 89146b9..c5e1b1d 100644
--- a/minetestmapperexe.h
+++ b/minetestmapperexe.h
@@ -39,18 +39,18 @@ public:
         MappingEnd // Writing image...
     };
 
-    QStringList getSupportedBackends(void) const;
+    QStringList getSupportedBackends() const;
 
     bool init();
     bool startMapping(const QStringList &arguments);
     bool isValid() const;
 
-    bool isMinetestMapper(void) const;
+    bool isMinetestMapper() const;
 
-    QString getVersion(void) const;
+    QString getVersion() const;
 
-    Tree getTree(void) const;
-    QString getTreeString(void) const;
+    Tree getTree() const;
+    QString getTreeString() const;
 
     void setExecutableFile(const QString &program);
     QString getMinetestMapperExecutableFile() const;
@@ -88,8 +88,8 @@ public slots:
     void cancel() const;
 private slots:
     void finished(int exitCode, QProcess::ExitStatus exitStatus);
-    void readStandardOutput(void);
-    void readStandardError(void);
+    void readStandardOutput();
+    void readStandardError();
     void errorOccured(QProcess::ProcessError error);
 private:
     void finishInitialization(void);