diff --git a/samples/aui/auidemo.cpp b/samples/aui/auidemo.cpp
index 7e85086561..f165a1e22b 100644
--- a/samples/aui/auidemo.cpp
+++ b/samples/aui/auidemo.cpp
@@ -1375,6 +1375,7 @@ void MyFrame::OnNotebookPageClose(wxAuiNotebookEvent& evt)
 void MyFrame::OnNotebookPageClosed(wxAuiNotebookEvent& evt)
 {
     wxAuiNotebook* ctrl = (wxAuiNotebook*)evt.GetEventObject();
+    wxUnusedVar(ctrl);
 
     // selection should always be a valid index
     wxASSERT_MSG( ctrl->GetSelection() < (int)ctrl->GetPageCount(),
diff --git a/samples/propgrid/propgrid.cpp b/samples/propgrid/propgrid.cpp
index aaa72e8716..2496138fac 100644
--- a/samples/propgrid/propgrid.cpp
+++ b/samples/propgrid/propgrid.cpp
@@ -912,6 +912,7 @@ void FormMain::OnPropertyGridColDragging( wxPropertyGridEvent& event )
 
 void FormMain::OnPropertyGridColEndDrag( wxPropertyGridEvent& event )
 {
+    wxUnusedVar(event);
     wxLogDebug(wxT("Splitter %i resize ended"), event.GetColumn());
 }
 
@@ -1788,6 +1789,7 @@ wxEND_EVENT_TABLE()
 void wxMyPropertyGridPage::OnPropertySelect( wxPropertyGridEvent& event )
 {
     wxPGProperty* p = event.GetProperty();
+    wxUnusedVar(p);
     wxLogDebug(wxT("wxMyPropertyGridPage::OnPropertySelect('%s' is %s"),
                p->GetName().c_str(),
                IsPropertySelected(p)? wxT("selected"): wxT("unselected"));