diff --git a/src/config.yml b/src/config.yml
index d8fce33..df54da0 100644
--- a/src/config.yml
+++ b/src/config.yml
@@ -11,6 +11,7 @@
 # sitting-height: Set how high you are sitting 'in' the stairs block (default is 0.7).
 # sitting-height-adj: Non-stairs and non-steps are adjusted automatically by this amount.
 # upsidedown-check: If true then prevent players from sitting on upside down stairs.
+# upper-step-check: If true then prevent players from sitting on an upper slab.
 # seat-occupied-check: Check if seat is already occupied.
 # per-item-perms: Enable chairs.sit.[item] permission node. Set to false if you're sitting on every block.
 # ignore-if-block-in-hand: Set this true disable sititng if player is holding a block in hand.