diff --git a/phpBB/includes/datetime.php b/phpBB/includes/datetime.php
index 92aef88599..3a7fc04105 100644
--- a/phpBB/includes/datetime.php
+++ b/phpBB/includes/datetime.php
@@ -24,7 +24,7 @@ class phpbb_datetime extends DateTime
 	protected $_user;
 
 	/**
-	* @var array Date formats are preprocessed by phpBB, to save constact recalculation they are cached.
+	* @var array Date formats are preprocessed by phpBB, to save constant recalculation they are cached.
 	*/
 	static protected $format_cache = array();