diff --git a/htdocs/includes/modules/facture/terre/terre.modules.php b/htdocs/includes/modules/facture/terre/terre.modules.php
index d61ecf4b345..f451509b795 100644
--- a/htdocs/includes/modules/facture/terre/terre.modules.php
+++ b/htdocs/includes/modules/facture/terre/terre.modules.php
@@ -101,7 +101,7 @@ class mod_facture_terre extends ModeleNumRefFactures
         {
             // Recherche rapide car restreint par un like sur champ indexé
             $posindice=8;
-            $sql = "SELECT MAX(0+SUBSTR(facnumber,$posindice))";
+            $sql = "SELECT MAX(0+SUBSTRING(facnumber,$posindice))";
             $sql.= " FROM ".MAIN_DB_PREFIX."facture";
             $sql.= " WHERE facnumber like '${fayymm}%'";
             $resql=$db->query($sql);
diff --git a/htdocs/includes/modules/propale/mod_propale_marbre.php b/htdocs/includes/modules/propale/mod_propale_marbre.php
index a164190074d..1863c635518 100644
--- a/htdocs/includes/modules/propale/mod_propale_marbre.php
+++ b/htdocs/includes/modules/propale/mod_propale_marbre.php
@@ -104,7 +104,7 @@ class mod_propale_marbre extends ModeleNumRefPropales
         {
             // Recherche rapide car restreint par un like sur champ indexé
             $posindice=8;
-            $sql = "SELECT MAX(0+SUBSTR(ref,$posindice))";
+            $sql = "SELECT MAX(0+SUBSTRING(ref,$posindice))";
             $sql.= " FROM ".MAIN_DB_PREFIX."propal";
             $sql.= " WHERE ref like '${pryymm}%'";
             $resql=$db->query($sql);