--- rpl/src/instructions_o1.c	2016/09/27 15:29:37	1.88
+++ rpl/src/instructions_o1.c	2017/06/20 13:37:09	1.90
@@ -1,7 +1,7 @@
 /*
 ================================================================================
   RPL/2 (R) version 4.1.26
-  Copyright (C) 1989-2016 Dr. BERTRAND Joël
+  Copyright (C) 1989-2017 Dr. BERTRAND Joël
 
   This file is part of RPL/2.
 
@@ -2361,6 +2361,7 @@ instruction_open(struct_processus *s_eta
 								{
 									type_arguments = 'S';
 								}
+								else if (type_arguments == 'F')
 								{
 									liberation(s_etat_processus,
 											s_objet_argument);