diff --git a/common/lang/en.lang.php b/common/lang/en.lang.php
index b1c1d18ed..f72275f33 100644
--- a/common/lang/en.lang.php
+++ b/common/lang/en.lang.php
@@ -84,7 +84,7 @@
     $lang->email_address = 'Email';
     $lang->homepage = 'Homepage';
     $lang->blog = 'Blog';
-    $lang->birthday = 'Birthdate';
+    $lang->birthday = 'Birthday';
     $lang->browser_title = 'Browser Title';
     $lang->title = 'Subject';
     $lang->title_content = 'Subject+Content';
diff --git a/config/func.inc.php b/config/func.inc.php
index 6cdb5ed08..f4a4026e0 100644
--- a/config/func.inc.php
+++ b/config/func.inc.php
@@ -256,8 +256,8 @@
      * @brief 월이름을 return
      **/
     function getMonthName($month, $short = true) {
-        $short_month = array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
-        $long_month = array("January","February","March","April","May","June","July","August","September","October","November","December");
+        $short_month = array('','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
+        $long_month = array('','January','February','March','April','May','June','July','August','September','October','November','December');
         return !$short?$long_month[$month]:$short_month[$month];
     }