diff --git a/src/Mod/Spreadsheet/App/Cell.cpp b/src/Mod/Spreadsheet/App/Cell.cpp
index 09593ade95..e5c78bfb9c 100644
--- a/src/Mod/Spreadsheet/App/Cell.cpp
+++ b/src/Mod/Spreadsheet/App/Cell.cpp
@@ -1011,7 +1011,7 @@ App::Color Cell::decodeColor(const std::string & color, const App::Color & defau
 }
 
 //roughly based on Spreadsheet/Gui/SheetModel.cpp
-std::string Cell::getFormattedQuantity(void)
+std::string Cell::getFormattedQuantity()
 {
     std::string result;
     QString qFormatted;
diff --git a/src/Mod/Spreadsheet/App/PropertyRowHeightsPyImp.cpp b/src/Mod/Spreadsheet/App/PropertyRowHeightsPyImp.cpp
index dd019a91fc..34bb95278d 100644
--- a/src/Mod/Spreadsheet/App/PropertyRowHeightsPyImp.cpp
+++ b/src/Mod/Spreadsheet/App/PropertyRowHeightsPyImp.cpp
@@ -31,7 +31,7 @@
 using namespace Spreadsheet;
 
 // returns a string which represents the object e.g. when printed in python
-std::string PropertyRowHeightsPy::representation(void) const
+std::string PropertyRowHeightsPy::representation() const
 {
     return std::string("<PropertyRowHeights object>");
 }
diff --git a/src/Mod/Spreadsheet/App/PropertySheet.cpp b/src/Mod/Spreadsheet/App/PropertySheet.cpp
index f1f89be227..0a13b5f783 100644
--- a/src/Mod/Spreadsheet/App/PropertySheet.cpp
+++ b/src/Mod/Spreadsheet/App/PropertySheet.cpp
@@ -286,7 +286,7 @@ PropertySheet::~PropertySheet()
     clear();
 }
 
-App::Property *PropertySheet::Copy(void) const
+App::Property *PropertySheet::Copy() const
 {
     return new PropertySheet(*this);
 }
diff --git a/src/Mod/Spreadsheet/App/PropertySheet.h b/src/Mod/Spreadsheet/App/PropertySheet.h
index 32c1944695..bb3b55d4ab 100644
--- a/src/Mod/Spreadsheet/App/PropertySheet.h
+++ b/src/Mod/Spreadsheet/App/PropertySheet.h
@@ -65,7 +65,7 @@ public:
     void afterRestore() override;
     void onContainerRestored() override;
 
-    Property *Copy(void) const override;
+    Property *Copy() const override;
 
     void Paste(const Property &from) override;
 
@@ -149,7 +149,7 @@ public:
 
     void removeColumns(int col, int count);
 
-    unsigned int getMemSize (void) const override;
+    unsigned int getMemSize () const override;
 
     bool mergeCells(App::CellAddress from, App::CellAddress to);
 
@@ -171,7 +171,7 @@ public:
 
     void recomputeDependencies(App::CellAddress key);
 
-    PyObject *getPyObject(void) override;
+    PyObject *getPyObject() override;
     void setPyObject(PyObject *) override;
 
     PyObject *getPyValue(PyObject *key);
diff --git a/src/Mod/Spreadsheet/App/PropertySheetPyImp.cpp b/src/Mod/Spreadsheet/App/PropertySheetPyImp.cpp
index 2343bfb83a..8d735b8e27 100644
--- a/src/Mod/Spreadsheet/App/PropertySheetPyImp.cpp
+++ b/src/Mod/Spreadsheet/App/PropertySheetPyImp.cpp
@@ -31,7 +31,7 @@
 using namespace Spreadsheet;
 
 // returns a string which represents the object e.g. when printed in python
-std::string PropertySheetPy::representation(void) const
+std::string PropertySheetPy::representation() const
 {
     return std::string("<PropertySheet object>");
 }
diff --git a/src/Mod/Spreadsheet/App/Sheet.cpp b/src/Mod/Spreadsheet/App/Sheet.cpp
index e4f2288205..2ff92ffe04 100644
--- a/src/Mod/Spreadsheet/App/Sheet.cpp
+++ b/src/Mod/Spreadsheet/App/Sheet.cpp
@@ -408,7 +408,7 @@ void Sheet::setCell(CellAddress address, const char * value)
   * @returns The Python object.
   */
 
-PyObject *Sheet::getPyObject(void)
+PyObject *Sheet::getPyObject()
 {
     if (PythonObject.is(Py::_None())){
         // ref counter is set to 1
@@ -901,7 +901,7 @@ void Sheet::updateBindings()
   *
   */
 
-DocumentObjectExecReturn *Sheet::execute(void)
+DocumentObjectExecReturn *Sheet::execute()
 {
     updateBindings();
 
@@ -1057,7 +1057,7 @@ DocumentObjectExecReturn *Sheet::execute(void)
   *
   */
 
-short Sheet::mustExecute(void) const
+short Sheet::mustExecute() const
 {
     if (!cellErrors.empty() || cells.isDirty())
         return 1;
diff --git a/src/Mod/Spreadsheet/App/Sheet.h b/src/Mod/Spreadsheet/App/Sheet.h
index 2c4e6469fe..ba3cd3a9b5 100644
--- a/src/Mod/Spreadsheet/App/Sheet.h
+++ b/src/Mod/Spreadsheet/App/Sheet.h
@@ -58,10 +58,10 @@ class SpreadsheetExport PropertySpreadsheetQuantity : public App::PropertyQuanti
 {
     TYPESYSTEM_HEADER_WITH_OVERRIDE();
 public:
-    PropertySpreadsheetQuantity(void){}
+    PropertySpreadsheetQuantity(){}
     ~PropertySpreadsheetQuantity() override{}
 
-    Property *Copy(void) const override;
+    Property *Copy() const override;
     void Paste(const Property &from) override;
 };
 
@@ -76,7 +76,7 @@ public:
     ~Sheet() override;
 
     /// returns the type name of the ViewProvider
-    const char* getViewProviderName(void) const override {
+    const char* getViewProviderName() const override {
         return "SpreadsheetGui::ViewProviderSheet";
     }
 
@@ -177,9 +177,9 @@ public:
 
     void getPropertyNamedList(std::vector<std::pair<const char*,App::Property*> > &List) const override;
 
-    short mustExecute(void) const override;
+    short mustExecute() const override;
 
-    App::DocumentObjectExecReturn *execute(void) override;
+    App::DocumentObjectExecReturn *execute() override;
 
     bool getCellAddress(const App::Property *prop, App::CellAddress &address);
 
diff --git a/src/Mod/Spreadsheet/App/SheetPyImp.cpp b/src/Mod/Spreadsheet/App/SheetPyImp.cpp
index 21662e76a7..fa472ca8ae 100644
--- a/src/Mod/Spreadsheet/App/SheetPyImp.cpp
+++ b/src/Mod/Spreadsheet/App/SheetPyImp.cpp
@@ -38,7 +38,7 @@ using namespace Spreadsheet;
 using namespace App;
 
 // returns a string which represents the object e.g. when printed in python
-std::string SheetPy::representation(void) const
+std::string SheetPy::representation() const
 {
     return std::string("<Sheet object>");
 }
diff --git a/src/Mod/Spreadsheet/Gui/AppSpreadsheetGui.cpp b/src/Mod/Spreadsheet/Gui/AppSpreadsheetGui.cpp
index 70b6327469..aa644f70de 100644
--- a/src/Mod/Spreadsheet/Gui/AppSpreadsheetGui.cpp
+++ b/src/Mod/Spreadsheet/Gui/AppSpreadsheetGui.cpp
@@ -42,7 +42,7 @@
 #include "Workbench.h"
 
  // use a different name to CreateCommand()
-void CreateSpreadsheetCommands(void);
+void CreateSpreadsheetCommands();
 
 void loadSpreadsheetResource()
 {
diff --git a/src/Mod/Spreadsheet/Gui/Command.cpp b/src/Mod/Spreadsheet/Gui/Command.cpp
index ef558b3cca..d78a2d8646 100644
--- a/src/Mod/Spreadsheet/Gui/Command.cpp
+++ b/src/Mod/Spreadsheet/Gui/Command.cpp
@@ -905,7 +905,7 @@ bool CmdCreateSpreadsheet::isActive()
 
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
-void CreateSpreadsheetCommands(void)
+void CreateSpreadsheetCommands()
 {
     Gui::CommandManager &rcCmdMgr = Gui::Application::Instance->commandManager();
 
diff --git a/src/Mod/Spreadsheet/Gui/SpreadsheetView.h b/src/Mod/Spreadsheet/Gui/SpreadsheetView.h
index 46bb880409..44117e83f6 100644
--- a/src/Mod/Spreadsheet/Gui/SpreadsheetView.h
+++ b/src/Mod/Spreadsheet/Gui/SpreadsheetView.h
@@ -64,7 +64,7 @@ public:
     SheetView(Gui::Document* pcDocument, App::DocumentObject* docObj, QWidget* parent);
     ~SheetView() override;
 
-    const char *getName(void) const override {return "SheetView";}
+    const char *getName() const override {return "SheetView";}
 
     bool onMsg(const char* pMsg,const char** ppReturn) override;
     bool onHasMsg(const char* pMsg) const override;
@@ -96,7 +96,7 @@ public:
 
     void deleteSelection();
 
-    PyObject *getPyObject(void) override;
+    PyObject *getPyObject() override;
 
     void deleteSelf() override;
 
diff --git a/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheet.cpp b/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheet.cpp
index 73607da6d9..4d9d70378f 100644
--- a/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheet.cpp
+++ b/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheet.cpp
@@ -67,7 +67,7 @@ void ViewProviderSheet::setDisplayMode(const char* ModeName)
     ViewProviderDocumentObject::setDisplayMode(ModeName);
 }
 
-std::vector<std::string> ViewProviderSheet::getDisplayModes(void) const
+std::vector<std::string> ViewProviderSheet::getDisplayModes() const
 {
     std::vector<std::string> StrList;
     StrList.emplace_back("Spreadsheet");
diff --git a/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheet.h b/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheet.h
index 62e5021588..c695e30dd8 100644
--- a/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheet.h
+++ b/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheet.h
@@ -52,10 +52,10 @@ public:
     ~ViewProviderSheet() override;
 
     void setDisplayMode(const char* ModeName) override;
-    bool useNewSelectionModel(void) const override {return false;}
+    bool useNewSelectionModel() const override {return false;}
     std::vector<std::string> getDisplayModes() const override;
 
-    bool doubleClicked(void) override;
+    bool doubleClicked() override;
     void setupContextMenu(QMenu* menu, QObject* receiver, const char* member) override;
 
     Spreadsheet::Sheet* getSpreadsheetObject() const;
@@ -66,7 +66,7 @@ public:
 
     bool setEdit(int ModNum) override;
 
-    bool isShow(void) const override { return true; }
+    bool isShow() const override { return true; }
 
     Gui::MDIView *getMDIView() const override;
 
diff --git a/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheetPyImp.cpp b/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheetPyImp.cpp
index 933d39b99a..6d60b1c504 100644
--- a/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheetPyImp.cpp
+++ b/src/Mod/Spreadsheet/Gui/ViewProviderSpreadsheetPyImp.cpp
@@ -30,7 +30,7 @@
 using namespace SpreadsheetGui;
 
 // returns a string which represents the object e.g. when printed in python
-std::string ViewProviderSpreadsheetPy::representation(void) const
+std::string ViewProviderSpreadsheetPy::representation() const
 {
     return std::string("<ViewProviderSpreadsheet object>");
 }