diff --git a/twitter.install b/twitter.install
index 19d0b46..ebdcb8b 100755
--- a/twitter.install
+++ b/twitter.install
@@ -107,7 +107,8 @@ function twitter_schema() {
       'last_refresh' => array(
         'description' => t("A UNIX timestamp marking the date Twitter statuses were last fetched on."),
         'type' => 'int',
-        'not null' => TRUE
+        'not null' => TRUE,
+        'default' => 0
       ),
     ),
     'indexes' => array('screen_name' => array('screen_name')),