diff --git a/poll.module b/poll.module
index d4bf8de..8ea1f6c 100644
--- a/poll.module
+++ b/poll.module
@@ -133,6 +133,7 @@ function _poll_menu_access($node, $perm, $inspect_allowvotes) {
 function poll_block_info() {
   $blocks['recent']['info'] = t('Most recent poll');
   $blocks['recent']['properties']['administrative'] = TRUE;
+  $blocks['recent']['cache'] = DRUPAL_NO_CACHE;
   return $blocks;
 }