diff --git a/CHANGELOG.TXT b/CHANGELOG.TXT
index 2bedfe14..0459b913 100644
--- a/CHANGELOG.TXT
+++ b/CHANGELOG.TXT
@@ -21,6 +21,8 @@ Version 2.3.3 - 2011/**/** - SVN r*** (postfixadmin-2.3 branch)
   - functions.inc.php: better error messages when database functions are missing
   - create domain: fixed typo in variable name that broke the default value for
     default aliases
+  - postgres: changed mailbox.quota, domain.quota and domain.maxquota fields
+    to bigint to allow mailboxes >4 GB (run setup.php to upgrade your database)
   - vacation.pl logged literal $variable instead of the variable content at two
     places
   - POSTFIX_CONF.txt: fixed filename for quota map
diff --git a/setup.php b/setup.php
index bea43a71..dabda2ee 100644
--- a/setup.php
+++ b/setup.php
@@ -125,7 +125,7 @@ if ($file_config == 1)
 
     require($incpath.'/config.inc.php');
     if(isset($CONF['configured'])) {
-        if($CONF['configured'] == TRUE) {
+        if($CONF['configured'] === TRUE) {
             print "<li>Checking \$CONF['configured'] - OK\n";
         } else {
             print "<li><b>Warning: \$CONF['configured'] is 'false'.<br>\n";
diff --git a/upgrade.php b/upgrade.php
index 1aacf61e..8857353c 100644
--- a/upgrade.php
+++ b/upgrade.php
@@ -108,7 +108,7 @@ _do_upgrade($version);
 function _do_upgrade($current_version) {
     global $CONF;
     # $target_version = preg_replace('/[^0-9]/', '', '$Revision$');
-    $target_version = 739; # hardcoded target version for 2.3 branch - increase (by one) if database changes in the branch are necessary
+    $target_version = 740; # hardcoded target version for 2.3 branch - increase (by one) if database changes in the branch are necessary
 
     if ($current_version >= $target_version) {
         # already up to date
@@ -1182,3 +1182,13 @@ function upgrade_730_pgsql() {
             FOR EACH ROW EXECUTE PROCEDURE merge_quota2();
     ");
 }
+
+function upgrade_740_pgsql() { # upgrade_968_pgsql() in SVN trunk
+    # pgsql counterpart for upgrade_169_mysql() - allow really big quota
+    $table_domain = table_by_key ('domain');
+    $table_mailbox = table_by_key('mailbox');
+    db_query_parsed("ALTER TABLE $table_domain  ALTER COLUMN quota    type bigint");
+    db_query_parsed("ALTER TABLE $table_domain  ALTER COLUMN maxquota type bigint");
+    db_query_parsed("ALTER TABLE $table_mailbox ALTER COLUMN quota    type bigint");
+}
+