diff --git a/src/generic/htmllbox.cpp b/src/generic/htmllbox.cpp
index fdeacaaea6..48b8b511cf 100644
--- a/src/generic/htmllbox.cpp
+++ b/src/generic/htmllbox.cpp
@@ -606,7 +606,7 @@ bool wxSimpleHtmlListBox::Create(wxWindow *parent, wxWindowID id,
                                  const wxSize& size,
                                  int n, const wxString choices[],
                                  long style,
-                                 const wxValidator& validator,
+                                 const wxValidator& wxVALIDATOR_PARAM(validator),
                                  const wxString& name)
 {
     if (!wxHtmlListBox::Create(parent, id, pos, size, style, name))
@@ -626,7 +626,7 @@ bool wxSimpleHtmlListBox::Create(wxWindow *parent, wxWindowID id,
                                  const wxSize& size,
                                  const wxArrayString& choices,
                                  long style,
-                                 const wxValidator& validator,
+                                 const wxValidator& wxVALIDATOR_PARAM(validator),
                                  const wxString& name)
 {
     if (!wxHtmlListBox::Create(parent, id, pos, size, style, name))
diff --git a/src/gtk/control.cpp b/src/gtk/control.cpp
index 3f38a406b8..cf25778626 100644
--- a/src/gtk/control.cpp
+++ b/src/gtk/control.cpp
@@ -45,7 +45,7 @@ bool wxControl::Create( wxWindow *parent,
                       const wxPoint &pos,
                       const wxSize &size,
                       long style,
-                      const wxValidator& validator,
+                      const wxValidator& wxVALIDATOR_PARAM(validator),
                       const wxString &name )
 {
     bool ret = wxWindow::Create(parent, id, pos, size, style, name);