diff --git a/devices/bodies/rpi5-persys.dapss b/devices/bodies/rpi5-persys.dapss
index 8986ebc..f7fc78f 100644
--- a/devices/bodies/rpi5-persys.dapss
+++ b/devices/bodies/rpi5-persys.dapss
@@ -1,3 +1,4 @@
+#define XORG_DISPLAY 0
 #include "../win0.dapss"
 ||
 #include "../avia0.dapss"
diff --git a/devices/win0.dapss b/devices/win0.dapss
index 16ae6d2..36baaf9 100644
--- a/devices/win0.dapss
+++ b/devices/win0.dapss
@@ -1 +1,6 @@
-+edev|win0|visual-qualeiface()|xcb(dev-substring)|xorg(display=1|screen=0)|mut
+#define XORG_DISPLAY_DEFAULT 1
+#ifndef XORG_DISPLAY
+#  define XORG_DISPLAY XORG_DISPLAY_DEFAULT
+#endif
+
++edev|win0|visual-qualeiface()|xcb(dev-substring)|xorg(display=XORG_DISPLAY|screen=0)|mut