diff --git a/src/pinyin.js b/src/pinyin.js
index 5ead4d6..fff30a3 100644
--- a/src/pinyin.js
+++ b/src/pinyin.js
@@ -54,7 +54,7 @@ if(isNode){
 
 
 // 声母表。
-var INITIALS = "zh,ch,sh,b,p,m,f,d,t,n,l,g,k,h,j,q,x,r,z,c,s,yu,y,w".split(",");
+var INITIALS = "zh,ch,sh,b,p,m,f,d,t,n,l,g,k,h,j,q,x,r,z,c,s,y,w".split(",");
 // 韵母表。
 //var FINALS = "ang,eng,ing,ong,an,en,in,un,er,ai,ei,ui,ao,ou,iu,ie,ve,a,o,e,i,u,v".split(",");
 var PINYIN_STYLE = {