diff --git a/install/sql/incremental/upd_dev_collection.sql b/install/sql/incremental/upd_dev_collection.sql
index 04f54690ca8202b1babe916a26b8f25d7de06f43..adce2c8c9c8bd192e965cc89802bc9e21bd6045a 100644
--- a/install/sql/incremental/upd_dev_collection.sql
+++ b/install/sql/incremental/upd_dev_collection.sql
@@ -14,4 +14,5 @@ CHANGE `spam_modifies_subj` `spam_modifies_subj` ENUM('N','Y') CHARACTER SET utf
 CHANGE `warnvirusrecip` `warnvirusrecip` ENUM('N','Y') CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT 'N',
 CHANGE `warnbannedrecip` `warnbannedrecip` ENUM('N','Y') CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT 'N',
 CHANGE `warnbadhrecip` `warnbadhrecip` ENUM('N','Y') CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT 'N';
-ALTER TABLE `dns_rr` CHANGE `data` `data` TEXT NOT NULL;
\ No newline at end of file
+ALTER TABLE `dns_rr` CHANGE `data` `data` TEXT NOT NULL;
+ALTER TABLE `web_database` CHANGE `database_quota` `database_quota` INT(11) NULL DEFAULT NULL;
\ No newline at end of file
diff --git a/install/sql/ispconfig3.sql b/install/sql/ispconfig3.sql
index 68cd76f0e5555fafe2e7102142cfc5e3996d0a65..3e9642d6c0dc14fac391c17992b0e3668ab31099 100644
--- a/install/sql/ispconfig3.sql
+++ b/install/sql/ispconfig3.sql
@@ -1864,7 +1864,7 @@ CREATE TABLE `web_database` (
   `type` varchar(16) NOT NULL DEFAULT 'y',
   `database_name` varchar(64) DEFAULT NULL,
   `database_name_prefix` varchar(50) NOT NULL default '',
-  `database_quota` int(11) unsigned DEFAULT NULL,
+  `database_quota` int(11) DEFAULT NULL,
   `quota_exceeded` enum('n','y') NOT NULL DEFAULT 'n',
   `last_quota_notification` date NULL default NULL,
   `database_user_id` int(11) unsigned DEFAULT NULL,