diff --git a/Fltk/GUI_Extras.cpp b/Fltk/GUI_Extras.cpp
index 76fe0c3facb7cf325a7b404b31f9a8ac7f0792e9..95519dec1f790715c4d8ce52670bdc45268da825 100644
--- a/Fltk/GUI_Extras.cpp
+++ b/Fltk/GUI_Extras.cpp
@@ -1327,7 +1327,7 @@ void cgnsw_cancel_cb(Fl_Widget *widget, void *data)
   dlg->status = 0;
 }
 
-int cgns_write_dialog(const char *const filename)
+int cgns_write_dialog(const char *filename)
 {
   static CGNSWriteDialog dlg;
   dlg.filename = filename;