diff --git a/package/x11r7/xapp_xinit/xapp_xinit.mk b/package/x11r7/xapp_xinit/xapp_xinit.mk
index a67ba146f2..a796884f6b 100644
--- a/package/x11r7/xapp_xinit/xapp_xinit.mk
+++ b/package/x11r7/xapp_xinit/xapp_xinit.mk
@@ -10,5 +10,6 @@ XAPP_XINIT_SITE = http://xorg.freedesktop.org/releases/individual/app
 XAPP_XINIT_DEPENDENCIES = xapp_xauth xlib_libX11
 XAPP_XINIT_LICENSE = MIT
 XAPP_XINIT_LICENSE_FILES = COPYING
+XAPP_XINIT_CONF_OPTS = MCOOKIE=/usr/bin/mcookie
 
 $(eval $(autotools-package))