diff --git a/adminer/drivers/mysql.inc.php b/adminer/drivers/mysql.inc.php
index a7edc44a..c8f6e994 100644
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@@ -150,7 +150,7 @@ if (!defined("DRIVER")) {
 			*/
 			function result($query, $field = 0) {
 				$result = $this->query($query);
-				if (!$result) {
+				if (!$result || !$result->num_rows) {
 					return false;
 				}
 				return mysql_result($result->_result, 0, $field);
diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index b9c2148d..c9fe0e03 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -80,7 +80,7 @@ if (isset($_GET["pgsql"])) {
 			
 			function result($query, $field = 0) {
 				$result = $this->query($query);
-				if (!$result) {
+				if (!$result || !$result->num_rows) {
 					return false;
 				}
 				return pg_fetch_result($result->_result, 0, $field);