diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index c373a5a8f7..17d192d88b 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -188,6 +188,7 @@
 		<li>[Fix] Adjust build_url() to not prepend $phpbb_root_path if path returned from redirect() is an URL. This fixes redirect issues with some installations and bridges. (Bug #47535)</li>
 		<li>[Fix] Do not mark global announcements as read if all topics in a forum become read (Bug #15729).</li>
 		<li>[Fix] Fix general error while registration, through undefined variable $config in validate_referer (Bug #49035 - Patch by wjvriend)</li>
+		<li>[Fix] Correctly extract column default value when exporting PostgreSQL tables. (Bug #48955)</li>
 		<li>[Change] submit_post() now accepts force_approved_state key passed to $data to indicate new posts being approved (true) or unapproved (false).</li>
 		<li>[Change] Change the data format of the default file ACM to be more secure from tampering and have better performance.</li>
 		<li>[Change] Add index on log_time to the log table to prevent slowdown on boards with many log entries. (Bug #44665 - Patch by bantu)</li>
diff --git a/phpBB/includes/acp/acp_database.php b/phpBB/includes/acp/acp_database.php
index bf02a58dce..b25518e1c4 100644
--- a/phpBB/includes/acp/acp_database.php
+++ b/phpBB/includes/acp/acp_database.php
@@ -1157,16 +1157,17 @@ class postgres_extractor extends base_extractor
 					AND (c.oid = d.adrelid)
 					AND d.adnum = " . $row['attnum'];
 			$def_res = $db->sql_query($sql_get_default);
+			$def_row = $db->sql_fetchrow($def_res);
+			$db->sql_freeresult($def_res);
 
-			if (!$def_res)
+			if (empty($def_row))
 			{
 				unset($row['rowdefault']);
 			}
 			else
 			{
-				$row['rowdefault'] = $db->sql_fetchfield('rowdefault', false, $def_res);
+				$row['rowdefault'] = $def_row['rowdefault'];
 			}
-			$db->sql_freeresult($def_res);
 
 			if ($row['type'] == 'bpchar')
 			{