diff --git a/include/wx/generic/fontdlgg.h b/include/wx/generic/fontdlgg.h
index acf9d1d16a..59c87eacff 100644
--- a/include/wx/generic/fontdlgg.h
+++ b/include/wx/generic/fontdlgg.h
@@ -79,9 +79,9 @@ class WXDLLEXPORT wxGenericFontDialog: public wxDialog
 DECLARE_EVENT_TABLE()
 };
 
-wxChar WXDLLEXPORT *wxFontFamilyIntToString(int family);
-wxChar WXDLLEXPORT *wxFontWeightIntToString(int weight);
-wxChar WXDLLEXPORT *wxFontStyleIntToString(int style);
+const wxChar WXDLLEXPORT *wxFontFamilyIntToString(int family);
+const wxChar WXDLLEXPORT *wxFontWeightIntToString(int weight);
+const wxChar WXDLLEXPORT *wxFontStyleIntToString(int style);
 int WXDLLEXPORT wxFontFamilyStringToInt(wxChar *family);
 int WXDLLEXPORT wxFontWeightStringToInt(wxChar *weight);
 int WXDLLEXPORT wxFontStyleStringToInt(wxChar *style);
diff --git a/src/generic/fontdlgg.cpp b/src/generic/fontdlgg.cpp
index f7e1eb9375..b7a8f3be4e 100644
--- a/src/generic/fontdlgg.cpp
+++ b/src/generic/fontdlgg.cpp
@@ -356,7 +356,7 @@ void wxGenericFontDialog::OnChangeFont(wxCommandEvent& WXUNUSED(event))
   m_previewer->Refresh();
 }
 
-wxChar *wxFontWeightIntToString(int weight)
+const wxChar *wxFontWeightIntToString(int weight)
 {
   switch (weight)
   {
@@ -370,7 +370,7 @@ wxChar *wxFontWeightIntToString(int weight)
   }
 }
 
-wxChar *wxFontStyleIntToString(int style)
+const wxChar *wxFontStyleIntToString(int style)
 {
   switch (style)
   {
@@ -384,7 +384,7 @@ wxChar *wxFontStyleIntToString(int style)
   }
 }
 
-wxChar *wxFontFamilyIntToString(int family)
+const wxChar *wxFontFamilyIntToString(int family)
 {
   switch (family)
   {