diff --git a/wp-includes/version.php b/wp-includes/version.php
index 65ac9c725a..ca6ca2c2e3 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.6-alpha-37545';
+$wp_version = '4.6-alpha-37546';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-signup.php b/wp-signup.php
index bff24987dc..fa2c6780a3 100644
--- a/wp-signup.php
+++ b/wp-signup.php
@@ -218,7 +218,7 @@ function show_user_form($user_name = '', $user_email = '', $errors = '') {
 	if ( $errmsg = $errors->get_error_message('user_name') ) {
 		echo '<p class="error">'.$errmsg.'</p>';
 	}
-	echo '<input name="user_name" type="text" id="user_name" value="'. esc_attr($user_name) .'" maxlength="60" /><br />';
+	echo '<input name="user_name" type="text" id="user_name" value="'. esc_attr( $user_name ) .'" autocapitalize="none" autocorrect="off" maxlength="60" /><br />';
 	_e( '(Must be at least 4 characters, letters and numbers only.)' );
 	?>