diff --git a/extra/ui/x11/x11.factor b/extra/ui/x11/x11.factor
index 1ba0c96a4d..70962b1ba0 100755
--- a/extra/ui/x11/x11.factor
+++ b/extra/ui/x11/x11.factor
@@ -12,7 +12,7 @@ IN: ui.x11
 
 SINGLETON: x11-ui-backend
 
-: XA_NET_WM_NAME "_NET_WM_NAME" x-atom ;
+: XA_NET_WM_NAME ( -- atom ) "_NET_WM_NAME" x-atom ;
 
 TUPLE: x11-handle window glx xic ;
 
diff --git a/extra/x11/xlib/xlib.factor b/extra/x11/xlib/xlib.factor
index 3c0ae24a70..6fc586106c 100755
--- a/extra/x11/xlib/xlib.factor
+++ b/extra/x11/xlib/xlib.factor
@@ -1257,8 +1257,8 @@ FUNCTION: Status XSetStandardProperties (
 
 FUNCTION: void XFree ( void* data ) ;
 FUNCTION: int XStoreName ( Display* display, Window w, char* window_name ) ;
-
 FUNCTION: void XSetWMNormalHints ( Display* display, Window w, XSizeHints* hints ) ;
+FUNCTION: int XBell ( Display* display, int percent ) ;
 
 ! !!! INPUT METHODS