diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index 2bf679b6..e0ded6ba 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -915,7 +915,7 @@ function input($field, $value, $function) {
 			echo $input;
 		} elseif (preg_match('~bool~', $field["type"])) {
 			echo "<input type='hidden'$attrs value='0'>" .
-				"<input type='checkbox'" . (in_array(strtolower($value), array('1', 't', 'true', 'y', 'yes', 'on')) ? " checked='checked'" : "") . "$attrs value='1'>";
+				"<input type='checkbox'" . (preg_match('~^(1|t|true|y|yes|on)$~i', $value) ? " checked='checked'" : "") . "$attrs value='1'>";
 		} elseif ($field["type"] == "set") { //! 64 bits
 			preg_match_all("~'((?:[^']|'')*)'~", $field["length"], $matches);
 			foreach ($matches[1] as $i => $val) {
diff --git a/changes.txt b/changes.txt
index 59b1319f..fdbcf68c 100644
--- a/changes.txt
+++ b/changes.txt
@@ -11,6 +11,7 @@ PostgreSQL: Export DROP SEQUENCE if dropping table
 MS SQL: Support freetds
 Elasticsearch: Insert, update, delete
 MongoDB: Support mongodb PHP extension
+Editor: Fix displaying of false values in PostgreSQL (bug #568)
 
 Adminer 4.4.0 (released 2018-01-17):
 Add Content Security Policy
diff --git a/editor/include/adminer.inc.php b/editor/include/adminer.inc.php
index 81907bca..16d90ec8 100644
--- a/editor/include/adminer.inc.php
+++ b/editor/include/adminer.inc.php
@@ -183,7 +183,7 @@ ORDER BY ORDINAL_POSITION", null, "") as $row) { //! requires MySQL 5
 			}
 		}
 		if (like_bool($field) && $return != "&nbsp;") { // bool
-			$return = ($val ? lang('yes') : lang('no'));
+			$return = (preg_match('~^(1|t|true|y|yes|on)$~i', $value) ? lang('yes') : lang('no'));
 		}
 		if ($link) {
 			$return = "<a href='$link'" . (is_url($link) ? " rel='noreferrer'" : "") . ">$return</a>";