diff --git a/threadr/board/submit.php b/threadr/board/submit.php
index 7f6eb58..592d890 100644
--- a/threadr/board/submit.php
+++ b/threadr/board/submit.php
@@ -7,7 +7,7 @@ $error = false;
 $error_message = "";
 if (!$error) {
   $statement = $pdo->prepare("INSERT INTO posts (board_id, user_id, title, content,) VALUES (:bid,:uid,:title,:content)");
-  $result = $statement->execute(array('bid'=>$id, 'uid'=>$_SESSION[user_id], 'title'=>$title, 'content'=>$content));
+  $result = $statement->execute(array('bid'=>$id, 'uid'=>$user_id, 'title'=>$title, 'content'=>$content));
 }
 if (!$result) {
     $error_message = "<p>Error: SQL error.</p><pre>" . $statement->queryString . "</pre><pre>" . $statement->errorInfo()[2] . "</pre>";