diff --git a/install/sql/dump.sql b/install/sql/dump.sql
index 6c4a469..d5f784e 100755
--- a/install/sql/dump.sql
+++ b/install/sql/dump.sql
@@ -295,7 +295,7 @@ CREATE TABLE `as_users` (
   `bio` text NOT NULL DEFAULT '',
   `since` int(11) NOT NULL,
   `gender` enum('m','f','u') NOT NULL DEFAULT 'u',
-  `birthday` int(11) NOT NULL DEFAULT '',
+  `birthday` int(11) NOT NULL DEFAULT 0,
   `active` tinyint(1) NOT NULL DEFAULT 0,
   `lang` varchar(3) NOT NULL DEFAULT '',
   `lastvisit` int(11) NOT NULL DEFAULT 0,