diff --git a/lib/installlib.php b/lib/installlib.php
index 1579bac68e5..13395b087a3 100644
--- a/lib/installlib.php
+++ b/lib/installlib.php
@@ -317,10 +317,10 @@ function install_print_help_page($help) {
 }
 
 /**
- * Prints installation page header, we can no use weblib yet in installer.
+ * Prints installation page header, we can not use weblib yet in installer.
  *
  * @global object
- * @param array $config
+ * @param stdClass $config
  * @param string $stagename
  * @param string $heading
  * @param string $stagetext
@@ -377,10 +377,10 @@ function install_print_header($config, $stagename, $heading, $stagetext, $stagec
 }
 
 /**
- * Prints installation page header, we can no use weblib yet in isntaller.
+ * Prints installation page header, we can not use weblib yet in installer.
  *
  * @global object
- * @param array $config
+ * @param stdClass $config
  * @param bool $reload print reload button instead of next
  * @return void
  */