diff --git a/exec/load/birthdate.js b/exec/load/birthdate.js
index a09e42663096cddda440600315c7c87098750232..2202d429690bdd129bd30d1a1bb4f5cd45336982 100644
--- a/exec/load/birthdate.js
+++ b/exec/load/birthdate.js
@@ -3,7 +3,7 @@
  * which is a JavaScript Date object representing the birthdate.
  */
 
-User.prototype.__defineGetter("birthDate", function() {
+User.prototype.__defineGetter__("birthDate", function() {
 	var mfirst=system.datestr(1728000).substr(0,2)=='01';
 	var match;
 	var m,d,y;