--- rpl/src/compilation.c	2013/03/22 11:03:57	1.58
+++ rpl/src/compilation.c	2013/03/22 11:11:40	1.59
@@ -1819,7 +1819,8 @@ conversion_majuscule(unsigned char *chai
 
 	caractere_courant = chaine;
 	caractere_courant_converti = chaine_convertie = (unsigned char *) malloc(
-			(longueur_chaine_plus_terminaison + 1) * sizeof(unsigned char));
+			((size_t) (longueur_chaine_plus_terminaison + 1))
+			* sizeof(unsigned char));
 
 	if (chaine_convertie != NULL)
 	{