diff --git a/exam/api/Posts/Posts.php b/exam/api/Posts/Posts.php
index a58b8fb..9be186b 100644
--- a/exam/api/Posts/Posts.php
+++ b/exam/api/Posts/Posts.php
@@ -30,7 +30,7 @@ class Posts extends Api
     // Throw 400 error if a required one is missing.
     $content = Input::post("content");
     // This one is optional
-    $limit = constrain(0, 30, intval(Input::post("l", 10)));
+    $limit = constrain(0, 30, intval(Input::post("limit", 10)));
     if (empty($content)) throw ApiError::missingField(["content"]);
 
     // Get logged in user