diff --git a/src/osx/combobox_osx.cpp b/src/osx/combobox_osx.cpp
index cd4fc9518a..f13da37700 100644
--- a/src/osx/combobox_osx.cpp
+++ b/src/osx/combobox_osx.cpp
@@ -200,12 +200,12 @@ void wxComboBox::SetString(unsigned int n, const wxString& s)
     SetValue(s); // changing the item in the list won't update the display item
 }
 
-void wxComboBox::EnableTextChangedEvents(bool enable)
+void wxComboBox::EnableTextChangedEvents(bool WXUNUSED(enable))
 {
     wxFAIL_MSG("Method Not Implemented.");
 }
 
-bool wxComboBox::OSXHandleClicked( double timestampsec )
+bool wxComboBox::OSXHandleClicked( double WXUNUSED(timestampsec) )
 {
     wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId );
     event.SetInt(GetSelection());
diff --git a/src/osx/core/evtloop_cf.cpp b/src/osx/core/evtloop_cf.cpp
index eec3c3bfb0..4e4dcd0aca 100644
--- a/src/osx/core/evtloop_cf.cpp
+++ b/src/osx/core/evtloop_cf.cpp
@@ -153,7 +153,7 @@ void wxObserverCallBack(CFRunLoopObserverRef observer, CFRunLoopActivity activit
         eventloop->ObserverCallBack(observer, activity);
 }
 
-void wxCFEventLoop::ObserverCallBack(CFRunLoopObserverRef observer, int activity)
+void wxCFEventLoop::ObserverCallBack(CFRunLoopObserverRef WXUNUSED(observer), int activity)
 {
     if ( activity & kCFRunLoopBeforeTimers )
     {