diff --git a/htdocs/contrat/fiche.php b/htdocs/contrat/fiche.php
index d86017d9e0d..9bf3b95cb2d 100644
--- a/htdocs/contrat/fiche.php
+++ b/htdocs/contrat/fiche.php
@@ -71,17 +71,36 @@ if ($contratid && !$user->rights->commercial->client->voir)
 }
 
 
-// Param si create
-$date_start='';
-$date_end='';
-if ($_POST["date_startmonth"] && $_POST["date_startday"] && $_POST["date_startyear"])
+// Si ajout champ produit libre
+if ($_POST["mode"]=='predefined')
 {
+	$date_start='';
+	$date_end='';
+  if ($_POST["date_startmonth"] && $_POST["date_startday"] && $_POST["date_startyear"])
+  {
     $date_start=mktime(12, 0 , 0, $_POST["date_startmonth"], $_POST["date_startday"], $_POST["date_startyear"]);
-}
-if ($_POST["date_endmonth"] && $_POST["date_endday"] && $_POST["date_endyear"])
-{
+  }
+  if ($_POST["date_endmonth"] && $_POST["date_endday"] && $_POST["date_endyear"])
+  {
     $date_end=mktime(12, 0 , 0, $_POST["date_endmonth"], $_POST["date_endday"], $_POST["date_endyear"]);
+  }
 }
+
+// Si ajout champ produit libre
+if ($_POST["mode"]=='libre')
+{
+	$date_start_sl='';
+	$date_end_sl='';
+  if ($_POST["date_startmonth"] && $_POST["date_startday"] && $_POST["date_startyear"])
+  {
+    $date_start_sl=mktime(12, 0 , 0, $_POST["date_startmonth"], $_POST["date_startday"], $_POST["date_startyear"]);
+  }
+  if ($_POST["date_endmonth"] && $_POST["date_endday"] && $_POST["date_endyear"])
+  {
+    $date_end_sl=mktime(12, 0 , 0, $_POST["date_endmonth"], $_POST["date_endday"], $_POST["date_endyear"]);
+  }
+}
+
 // Param si updateligne
 $date_start_update='';
 $date_end_update='';