diff --git a/apachesolr_search.module b/apachesolr_search.module
index 18fa7c4..a25f3e2 100644
--- a/apachesolr_search.module
+++ b/apachesolr_search.module
@@ -166,7 +166,7 @@ function apachesolr_search_menu_alter(&$items) {
     $parts = explode('/', $search_page['search_path']);
     $keys_pos = count($parts);
     // Tests whether we are simulating a core search tab.
-    $core_search = ($parts[0] == 'search');    
+    $core_search = ($parts[0] == 'search');
     $position = array_search('%', $parts);
     $page_title = isset($search_page['page_title']) ? $search_page['page_title'] : 'Search Results';
 
@@ -1456,45 +1456,6 @@ function apachesolr_search_form_search_block_form_alter(&$form, $form_state) {
     $form['#submit'][] = 'apachesolr_search_form_search_submit';
   }
 }
-/**
- * Implements hook_form_[form_id]_alter().
- *
- * This adds the retain filters to the search form.
- */
-function apachesolr_search_form_search_form_alter(&$form, $form_state) {
-  if (!empty($form['module']['#value']) && $form['module']['#value'] == 'apachesolr_search') {
-    $form['#submit'][] = 'apachesolr_search_form_search_submit';
-    // No other modification make sense unless a query is active.
-    // Note - this means that the query must always be run before
-    // calling drupal_get_form('search_form').
-    // Load core search page
-    $search_page = apachesolr_search_page_load('core_search');
-    $apachesolr_has_searched = apachesolr_has_searched($search_page['env_id']);
-
-    $searcher = NULL;
-    $fq = NULL;
-    if ($apachesolr_has_searched) {
-      $query = apachesolr_current_query($search_page['env_id']);
-      $searcher = $query->getSearcher();
-      // We use the presence of filter query params as a flag for the retain filters checkbox.
-      $fq = $query->getParam('fq');
-    }
-
-    $form['basic']['apachesolr_search']['#tree'] = TRUE;
-    $form['basic']['apachesolr_search']['get'] = array(
-      '#type' => 'hidden',
-      '#default_value' => json_encode(array_diff_key($_GET, array('q' => 1, 'page' => 1, 'solrsort' => 1, 'retain-filters' => 1))),
-    );
-
-    if ($fq || isset($form_state['input']['apachesolr_search']['retain-filters'])) {
-      $form['basic']['apachesolr_search']['retain-filters'] = array(
-        '#type' => 'checkbox',
-        '#title' => t('Retain current filters'),
-        '#default_value' => (int) isset($_GET['retain-filters']),
-      );
-    }
-  }
-}
 
 /**
  * Default theme function for spelling suggestions.
@@ -1516,15 +1477,6 @@ function theme_apachesolr_search_suggestions($variables) {
  */
 function apachesolr_search_form_search_submit($form, &$form_state) {
   $fv = $form_state['values'];
-
-  if (isset($fv['apachesolr_search'])) {
-    $get = json_decode($fv['apachesolr_search']['get'], TRUE);
-    if (!empty($fv['apachesolr_search']['retain-filters'])) {
-      $get['retain-filters'] = '1';
-      // Add the query values into the redirect.
-      $form_state['redirect'] = array($form_state['redirect'], array('query' => $get));
-    }
-  }
   // Replace keys with their rawurlencoded value
   if (isset($fv['search_block_form'])) {
     $raw_keys = rawurlencode($fv['search_block_form']);