diff --git a/app/views/wechats/login.html.erb b/app/views/wechats/login.html.erb
index a079ca6a0..c305cd9d5 100644
--- a/app/views/wechats/login.html.erb
+++ b/app/views/wechats/login.html.erb
@@ -20,7 +20,7 @@
         <div class="weui_cell">
           <div class="weui_cell_hd"><label class="weui_label">用户名</label></div>
           <div class="weui_cell_bd weui_cell_primary">
-            <input class="weui_input" type="text" name="username" placeholder="请输入邮箱地址或昵称"/>
+            <input class="weui_input" autocapitalize="off" type="text" name="username" placeholder="请输入邮箱地址或昵称"/>
           </div>
         </div>