diff --git a/adminer/drivers/mssql.inc.php b/adminer/drivers/mssql.inc.php
index 11f6436b..a6b9e4f9 100644
--- a/adminer/drivers/mssql.inc.php
+++ b/adminer/drivers/mssql.inc.php
@@ -147,8 +147,10 @@ if (isset($_GET["mssql"])) {
 				$this->_link = @mssql_connect($server, $username, $password);
 				if ($this->_link) {
 					$result = $this->query("SELECT SERVERPROPERTY('ProductLevel'), SERVERPROPERTY('Edition')");
-					$row = $result->fetch_row();
-					$this->server_info = $this->result("sp_server_info 2", 2) . " [$row[0]] $row[1]";
+					if ($result) {
+						$row = $result->fetch_row();
+						$this->server_info = $this->result("sp_server_info 2", 2) . " [$row[0]] $row[1]";
+					}
 				} else {
 					$this->error = mssql_get_last_message();
 				}