diff --git a/wayland/sway/post-install b/wayland/sway/post-install
index 4f579ff1..1aea9a00 100755
--- a/wayland/sway/post-install
+++ b/wayland/sway/post-install
@@ -6,4 +6,10 @@ NOTE: sway requires the seatd daemon be running to function.
       If no seat management is desired, install the sway-no-seat 
       or sway-tiny packages instead of this one (and remove libseat).
 
+NOTE: You must set XDG_RUNTIME_DIR in your shellrc
+      or .profile for things to work. This directory
+      must exist and must be writable by your user.
+
+      export XDG_RUNTIME_DIR=/run/user/\$(id -u)
+
 EOF