Index: fb_user.module
===================================================================
--- fb_user.module	(revision 1101)
+++ fb_user.module	(working copy)
@@ -542,7 +542,7 @@
           '#value' => $fb_button,
           '#type' => 'markup',
           '#weight' => -1,  // Ideally, we'd put ourself next to openid login, but doesn't look right when next to form buttons.
-          '#prefix' => '<div class="fb-login-button">',
+          '#prefix' => '<div class="fb-login-button-wrapper">',
           '#suffix' => '</div>',
         );
       }