--- a/stage1_2/iec_flex.ll	Sat Sep 27 20:09:19 2014 +0100
+++ b/stage1_2/iec_flex.ll	Sun Sep 28 16:35:44 2014 +0100
@@ -1252,6 +1252,7 @@
 
 
 REF	{if (get_opt_ref_operator()) return REF;        else{REJECT;}}		/* Keyword in IEC 61131-3 v3 */
+DREF	{if (get_opt_ref_operator()) return DREF;       else{REJECT;}}		/* Keyword in IEC 61131-3 v3 */
 REF_TO	{if (get_opt_ref_operator()) return REF_TO;     else{REJECT;}}		/* Keyword in IEC 61131-3 v3 */
 NULL	{if (get_opt_ref_operator()) return NULL_token; else{REJECT;}}		/* Keyword in IEC 61131-3 v3 */