From 7e0fb6a9681c6b7e67b11441607305a36989261e Mon Sep 17 00:00:00 2001
From: TheLittleBoy <TheLittleBoy@users.noreply.github.com>
Date: Fri, 4 Jul 2014 11:44:44 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BB=A3=E7=A0=81=E6=8B=BC=E5=86=99=E9=94=99?=
 =?UTF-8?q?=E8=AF=AF?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

mus ----- must    ，特此修正。
---
 source/chapter2/21_Protocols.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/chapter2/21_Protocols.md b/source/chapter2/21_Protocols.md
index e1173fce..8cd9fd7f 100755
--- a/source/chapter2/21_Protocols.md
+++ b/source/chapter2/21_Protocols.md
@@ -62,7 +62,7 @@ class SomeClass: SomeSuperClass, FirstProtocol, AnotherProtocol {
 
 ```swift
 protocol SomeProtocol {
-	var musBeSettable : Int { get set }
+	var mustBeSettable : Int { get set }
 	var doesNotNeedToBeSettable: Int { get }
 }
 ```