diff --git a/src/gtk/menu.cpp b/src/gtk/menu.cpp
index feb4c5e2f3..56ddd5ac50 100644
--- a/src/gtk/menu.cpp
+++ b/src/gtk/menu.cpp
@@ -180,7 +180,7 @@ static int FindMenuItemRecursive( const wxMenu *menu, const wxString &menuString
     return wxNOT_FOUND;
 }
 
-wxMenuItem *wxMenuBar::FindItemForId(int itemId, wxMenu **menuForItem = NULL) const
+wxMenuItem *wxMenuBar::FindItemForId(int itemId, wxMenu **menuForItem ) const
 {
     if ( menuForItem )
     {
diff --git a/src/gtk1/menu.cpp b/src/gtk1/menu.cpp
index feb4c5e2f3..56ddd5ac50 100644
--- a/src/gtk1/menu.cpp
+++ b/src/gtk1/menu.cpp
@@ -180,7 +180,7 @@ static int FindMenuItemRecursive( const wxMenu *menu, const wxString &menuString
     return wxNOT_FOUND;
 }
 
-wxMenuItem *wxMenuBar::FindItemForId(int itemId, wxMenu **menuForItem = NULL) const
+wxMenuItem *wxMenuBar::FindItemForId(int itemId, wxMenu **menuForItem ) const
 {
     if ( menuForItem )
     {