diff --git a/inc-calcul.php3 b/inc-calcul.php3
index 6563dc4b990c12cdeb47afddb306a339bf5136a1..e7558d83b2ad04100ad5cbc55ee9b7288186981b 100644
--- a/inc-calcul.php3
+++ b/inc-calcul.php3
@@ -152,6 +152,11 @@ function calculer_contexte() {
 		if (!eregi("^(recalcul|submit|var_.*)$", $var))
 			$contexte[$var] = $val;
 	}
+	foreach($GLOBALS['HTTP_POST_VARS'] as $var => $val) {
+		if (!eregi("^(recalcul|submit|var_.*)$", $var))
+			$contexte[$var] = $val;
+	}
+
 	if ($GLOBALS['date'])
 		$contexte['date'] = $contexte['date_redac'] = date($GLOBALS['date']);
 	else