diff --git a/tpl/default/install.html b/tpl/default/install.html
index 18cf0ef3..1c40dbce 100644
--- a/tpl/default/install.html
+++ b/tpl/default/install.html
@@ -30,7 +30,7 @@
       </div>
       <div class="pure-u-lg-{$ratioInput} pure-u-1">
         <div class="form-input">
-          <input type="text" name="setlogin" id="username">
+          <input type="text" name="setlogin" id="username" autocapitalize="off">
         </div>
       </div>
     </div>
diff --git a/tpl/default/loginform.html b/tpl/default/loginform.html
index 90c2b2b6..ef9f1630 100644
--- a/tpl/default/loginform.html
+++ b/tpl/default/loginform.html
@@ -12,7 +12,7 @@
       <h2 class="window-title">{'Login'|t}</h2>
       <div>
         <input type="text" name="login" aria-label="{'Username'|t}" placeholder="{'Username'|t}"
-           {if="!empty($username)"}value="{$username}"{/if} class="autofocus">
+           {if="!empty($username)"}value="{$username}"{/if} class="autofocus" autocapitalize="off">
       </div>
       <div>
         <input type="password" name="password" aria-label="{'Password'|t}" placeholder="{'Password'|t}" class="autofocus">
diff --git a/tpl/default/page.header.html b/tpl/default/page.header.html
index a71464c7..ed5a09e8 100644
--- a/tpl/default/page.header.html
+++ b/tpl/default/page.header.html
@@ -138,7 +138,7 @@
   {if="!$is_logged_in"}
     <form method="post" name="loginform">
       <div class="subheader-form header-login-form" id="header-login-form">
-        <input type="text" name="login" aria-label="{'Username'|t}" placeholder="{'Username'|t}" >
+        <input type="text" name="login" aria-label="{'Username'|t}" placeholder="{'Username'|t}" autocapitalize="off" >
         <input type="password" name="password" aria-label="{'Password'|t}" placeholder="{'Password'|t}" >
         <div class="remember-me">
           <input type="checkbox" name="longlastingsession" id="longlastingsession" checked>
diff --git a/tpl/vintage/install.html b/tpl/vintage/install.html
index 8c10b2cb..9e5e6a17 100644
--- a/tpl/vintage/install.html
+++ b/tpl/vintage/install.html
@@ -7,7 +7,7 @@
     It looks like it's the first time you run Shaarli. Please configure it:<br>
     <form method="POST" action="{$base_path}/install" name="installform" id="installform">
         <table>
-            <tr><td><b>Login:</b></td><td><input type="text" name="setlogin" size="30"></td></tr>
+            <tr><td><b>Login:</b></td><td><input type="text" name="setlogin" size="30" autocapitalize="off"></td></tr>
             <tr><td><b>Password:</b></td><td><input type="password" name="setpassword" size="30"></td></tr>
             <tr>
                 <td><b>Timezone:</b></td>
diff --git a/tpl/vintage/loginform.html b/tpl/vintage/loginform.html
index 6aa20ab1..baf4bd8e 100644
--- a/tpl/vintage/loginform.html
+++ b/tpl/vintage/loginform.html
@@ -13,7 +13,7 @@
   <div id="headerform">
     <form method="post" name="loginform" action="{$base_path}/login">
       <label for="login">Login: <input type="text" id="login" name="login" tabindex="1"
-         {if="!empty($username)"}value="{$username}"{/if}>
+         {if="!empty($username)"}value="{$username}"{/if} autocapitalize="off">
       </label>
       <label for="password">Password: <input type="password" id="password" name="password" tabindex="2">
       </label>