diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index f9d81907..3ee7c86b 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -277,7 +277,7 @@ ORDER BY a.attnum"
 			}
 			$return[$relname]["descs"] = array();
 			foreach (explode(" ", $row["indoption"]) as $indoption) {
-				$return[$relname]["descs"][] = ($indoption ? '1' : null); //! check what the bits mean
+				$return[$relname]["descs"][] = ($indoption & 1 ? '1' : null); // 1 - INDOPTION_DESC
 			}
 			$return[$relname]["lengths"] = array();
 		}