diff --git a/htdocs/fourn/class/fournisseur.commande.class.php b/htdocs/fourn/class/fournisseur.commande.class.php
index 0ae72b8f96d..b7ee4ee7232 100644
--- a/htdocs/fourn/class/fournisseur.commande.class.php
+++ b/htdocs/fourn/class/fournisseur.commande.class.php
@@ -1704,7 +1704,7 @@ class CommandeFournisseur extends CommonOrder
             $this->error='ErrorBadValueForParameterWarehouse';
             return -1;
         }
-        if ($qty <= 0)
+        if ($qty == 0)
         {
             $this->error='ErrorBadValueForParameterQty';
             return -1;
diff --git a/htdocs/fourn/commande/dispatch.php b/htdocs/fourn/commande/dispatch.php
index dba45be1bc5..c55183921f2 100644
--- a/htdocs/fourn/commande/dispatch.php
+++ b/htdocs/fourn/commande/dispatch.php
@@ -243,7 +243,7 @@ if ($action == 'dispatch' && $user->rights->fournisseur->commande->receptionner)
 			$fk_commandefourndet = "fk_commandefourndet_" . $reg[1] . '_' . $reg[2];
 
 			// We ask to move a qty
-			if (GETPOST($qty) > 0) {
+			if (GETPOST($qty) != 0) {
 				if (! (GETPOST($ent, 'int') > 0)) {
 					dol_syslog('No dispatch for line ' . $key . ' as no warehouse choosed');
 					$text = $langs->transnoentities('Warehouse') . ', ' . $langs->transnoentities('Line') . ' ' . ($numline);