diff --git a/wayland/sway-no-seat/post-install b/wayland/sway-no-seat/post-install
index 1915d004..3564eb30 100755
--- a/wayland/sway-no-seat/post-install
+++ b/wayland/sway-no-seat/post-install
@@ -2,3 +2,15 @@
 
 chown root:input "$KISS_ROOT/usr/bin/sway"
 chmod g+s        "$KISS_ROOT"/usr/bin/sway
+
+cat <<EOF
+
+NOTE: You must be in the 'video' group.
+
+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