diff --git a/include/wx/mac/uma.h b/include/wx/mac/uma.h
index c59d42cd41..2587f1b2c1 100644
--- a/include/wx/mac/uma.h
+++ b/include/wx/mac/uma.h
@@ -49,8 +49,10 @@ void            UMASetMenuItemText(  MenuRef menu,  MenuItemIndex item, const wx
 void            UMAShowWatchCursor() ;
 void            UMAShowArrowCursor() ;
 
-OSStatus        UMAPrOpen(void *macPrintSession) ;
-OSStatus        UMAPrClose(void *macPrintSession) ;
+#if !TARGET_CARBON
+OSStatus        UMAPrOpen() ;
+OSStatus        UMAPrClose() ;
+#endif
 
 // window manager