--- rpl/src/instructions_r7.c	2011/12/01 15:23:49	1.2
+++ rpl/src/instructions_r7.c	2011/12/01 17:06:22	1.3
@@ -235,6 +235,7 @@ instruction_regex(struct_processus *s_et
 		{
 			if ((*(*l_element_courant_lecture).donnee).type != CHN)
 			{
+				regfree(&expression);
 				liberation(s_etat_processus, s_objet_argument_1);
 				liberation(s_etat_processus, s_objet_argument_2);
 				liberation(s_etat_processus, s_objet_resultat);