From 1e6902d21f7e3fc226a96351539160433edf3ebf Mon Sep 17 00:00:00 2001
From: Mark Otto <markdotto@gmail.com>
Date: Sat, 25 Mar 2017 22:27:24 -0700
Subject: [PATCH] fixes #22133

---
 docs/layout/grid.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/docs/layout/grid.md b/docs/layout/grid.md
index 95fd999f36..ca3537e843 100644
--- a/docs/layout/grid.md
+++ b/docs/layout/grid.md
@@ -710,10 +710,11 @@ $grid-gutter-widths: (
 
 ### Grid tiers
 
-Moving beyond the columns themselves, you may also customize the number of grid tiers. If you wanted just three grid tiers, you'd update the `$grid-breakpoints` and `$container-max-widths` to something like this:
+Moving beyond the columns themselves, you may also customize the number of grid tiers. If you wanted just four grid tiers, you'd update the `$grid-breakpoints` and `$container-max-widths` to something like this:
 
 {% highlight scss %}
 $grid-breakpoints: (
+  xs: 0,
   sm: 480px,
   md: 768px,
   lg: 1024px
-- 
2.47.2