Index: src/wp-admin/user-new.php
===================================================================
--- src/wp-admin/user-new.php	(revision 27736)
+++ src/wp-admin/user-new.php	(working copy)
@@ -400,7 +400,7 @@
 	</tr>
 	<tr>
 		<th scope="row"><label for="send_password"><?php _e('Send Password?') ?></label></th>
-		<td><label for="send_password"><input type="checkbox" name="send_password" id="send_password" <?php checked( $new_user_send_password ); ?> /> <?php _e('Send this password to the new user by email.'); ?></label></td>
+		<td><label for="send_password"><input type="checkbox" name="send_password" id="send_password" value="1" <?php checked( $new_user_send_password ); ?> /> <?php _e('Send this password to the new user by email.'); ?></label></td>
 	</tr>
 <?php endif; ?>
 <?php } // !is_multisite ?>