Set correct content type for JSON responses

Signed-off-by: Michal Čihař <michal@cihar.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/lint.php b/lint.php
index 9aef982888..3aee35ba96 100644
--- a/lint.php
+++ b/lint.php
@@ -31,7 +31,8 @@ require_once 'libraries/Linter.class.php';
 $sql_query = !empty($_POST['sql_query']) ? $_POST['sql_query'] : '';
 
 // Disabling standard response.
-$response = PMA_Response::getInstance();
-$response->disable();
+PMA_Response::getInstance()->disable();
+
+PMA_headerJSON();
 
 echo json_encode(PMA_Linter::lint($sql_query));