diff --git a/adminer/drivers/mssql.inc.php b/adminer/drivers/mssql.inc.php
index 387d502f..31efda29 100644
--- a/adminer/drivers/mssql.inc.php
+++ b/adminer/drivers/mssql.inc.php
@@ -160,6 +160,13 @@ if (isset($_GET["mssql"])) {
 			return get_val("SELECT SCOPE_IDENTITY()"); // @@IDENTITY can return trigger INSERT
 		}
 
+		function explain($connection, $query) {
+			$connection->query("SET SHOWPLAN_ALL ON");
+			$return = $connection->query($query);
+			$connection->query("SET SHOWPLAN_ALL OFF"); // connection is used also for indexes
+			return $return;
+		}
+
 	} else {
 		class MssqlDb extends PdoDb {
 			function select_db($database) {
@@ -177,6 +184,9 @@ if (isset($_GET["mssql"])) {
 			return $connection->lastInsertId();
 		}
 
+		function explain($connection, $query) {
+		}
+
 		if (extension_loaded("pdo_sqlsrv")) {
 			class Db extends MssqlDb {
 				public $extension = "PDO_SQLSRV";
@@ -556,13 +566,6 @@ WHERE OBJECT_NAME(i.object_id) = " . q($table), $connection2) as $row
 		;
 	}
 
-	function explain($connection, $query) {
-		$connection->query("SET SHOWPLAN_ALL ON");
-		$return = $connection->query($query);
-		$connection->query("SET SHOWPLAN_ALL OFF"); // connection is used also for indexes
-		return $return;
-	}
-
 	function found_rows($table_status, $where) {
 	}
 
diff --git a/tests/generate-pdo.php b/tests/generate-pdo.php
index 24fdaa67..6dc3b333 100755
--- a/tests/generate-pdo.php
+++ b/tests/generate-pdo.php
@@ -10,6 +10,7 @@ foreach (glob("*.html") as $filename) {
 			return "/$match[1].php?ext=pdo" . ($match[3] ? "&" : "");
 		}, $file);
 		$file = str_replace("<tr><td>open</td><td>/coverage.php?coverage=0</td><td></td></tr>\n", "", $file);
+		$file = str_replace("<tr><td>click</td><td>link=Explain</td><td></td></tr>\n<tr><td>verifyTextPresent</td><td>Clustered Index Scan</td><td></td></tr>\n", "", $file); // MS SQL PDO doesn't support EXPLAIN
 		$file = preg_replace("~//input\[@value='Login']~", "\\0</td><td></td></tr>\n<tr><td>verifyTextPresent</td><td>PDO_", $file, 1);
 		file_put_contents("pdo-$filename", $file);
 	}