diff --git a/ext/setup/main.php b/ext/setup/main.php
index 98dc8aa7..a8a0c021 100644
--- a/ext/setup/main.php
+++ b/ext/setup/main.php
@@ -166,7 +166,6 @@ class Setup extends SimpleExtension {
 		$config->set_default_bool("use_autodate", true);
 		$config->set_default_bool("word_wrap", true);
 		$config->set_default_string("use_autodate", "F j, Y");
-		$config->set_default_string("cookie_prefix", "shm");
 	}
 
 	public function onPageRequest($event) {