diff --git a/include/wx/generic/gridctrl.h b/include/wx/generic/gridctrl.h
index 71112fb94f..cbb8be7a5e 100644
--- a/include/wx/generic/gridctrl.h
+++ b/include/wx/generic/gridctrl.h
@@ -283,7 +283,7 @@ protected:
 class WXDLLIMPEXP_ADV wxGridCellChoiceRenderer : public wxGridCellStringRenderer
 {
 public:
-    wxGridCellChoiceRenderer( const wxString& choices = wxEmptyString );
+    wxGridCellChoiceRenderer(const wxString& choices = wxString());
 
     wxGridCellChoiceRenderer(const wxGridCellChoiceRenderer& other);
 
@@ -309,7 +309,7 @@ protected:
 class WXDLLIMPEXP_ADV wxGridCellEnumRenderer : public wxGridCellChoiceRenderer
 {
 public:
-    wxGridCellEnumRenderer( const wxString& choices = wxEmptyString )
+    wxGridCellEnumRenderer(const wxString& choices = wxString())
         : wxGridCellChoiceRenderer(choices)
     {
     }
diff --git a/include/wx/generic/grideditors.h b/include/wx/generic/grideditors.h
index 86979c1f41..e1f093ac84 100644
--- a/include/wx/generic/grideditors.h
+++ b/include/wx/generic/grideditors.h
@@ -311,7 +311,7 @@ public:
     // set the string values returned by GetValue() for the true and false
     // states, respectively
     static void UseStringValues(const wxString& valueTrue = wxT("1"),
-                                const wxString& valueFalse = wxEmptyString);
+                                const wxString& valueFalse = wxString());
 
     // return true if the given string is equal to the string representation of
     // true value which we currently use
@@ -402,7 +402,7 @@ protected:
 class WXDLLIMPEXP_ADV wxGridCellEnumEditor : public wxGridCellChoiceEditor
 {
 public:
-    wxGridCellEnumEditor( const wxString& choices = wxEmptyString );
+    wxGridCellEnumEditor(const wxString& choices = wxString());
 
     wxGridCellEnumEditor(const wxGridCellEnumEditor& other)
         : wxGridCellChoiceEditor(other),