sharethis.module |    1 +
 1 file changed, 1 insertion(+)

diff --git a/sharethis.module b/sharethis.module
index f636add..c8ba314 100644
--- a/sharethis.module
+++ b/sharethis.module
@@ -583,6 +583,7 @@ function sharethis_include_js() {
 function sharethis_block_info() {
   $blocks['sharethis_block'] = array(
     'info' => t('ShareThis'),
+    'cache' => DRUPAL_CACHE_PER_PAGE,
   );
   return $blocks;
 }