diff --git a/src/menu.c b/src/menu.c
index c6c1837d..5e3e97e3 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -1165,8 +1165,8 @@ wMenuMapAt(WMenu *menu, int x, int y, int keyboard)
         }
 
         XMoveWindow(dpy, menu->frame->core->window, x, y);
-        menu->frame_x = x;
-        menu->frame_y = y;
+        menu->frame_x = (x<0) ? 0 : x;
+        menu->frame_y = (y<0) ? 0 : y;
         XMapWindow(dpy, menu->frame->core->window);
         wRaiseFrame(menu->frame->core);
         menu->flags.mapped = 1;