diff --git a/system/language/english/calendar_lang.php b/system/language/english/calendar_lang.php
index 4a399af..02475e1 100644
--- a/system/language/english/calendar_lang.php
+++ b/system/language/english/calendar_lang.php
@@ -1,6 +1,6 @@
 <?php
 
-$lang['cal_s']			= "Su";
+$lang['cal_su']			= "Su";
 $lang['cal_mo'] 		= "Mo";
 $lang['cal_tu'] 		= "Tu";
 $lang['cal_we'] 		= "We";