diff --git a/include/class/tva_rate_mtable.class.php b/include/class/tva_rate_mtable.class.php
index 0f9f3f15f..f985670d1 100644
--- a/include/class/tva_rate_mtable.class.php
+++ b/include/class/tva_rate_mtable.class.php
@@ -454,17 +454,17 @@ class Tva_Rate_MTable extends Manage_Table_SQL
         }
         
         // if vatex is set then code invoice must be different from S and Z
-        if ( $g_parameter->MY_INVOICE_FORMAT == 'UBL21BE'  && trim($this->table->vx_code??"") != "" && in_array($this->table->tva_peppol_code,['S','Z'] ))
+        if ( $g_parameter->MY_INVOICE_FORMAT == 'UBL21BEL'  && trim($this->table->vx_code??"") != "" && in_array($this->table->tva_peppol_code,['S','Z'] ))
         {
             $this->set_error("vx_code",_("Le code d'exemption TVA ne peut être utilisé avec ce  code Facture électronique UBL "));
         }
         // if vatex is set then code invoice must be different from S and Z
-        if ( $g_parameter->MY_INVOICE_FORMAT == 'UBL21BE'  && trim($this->table->vx_code??"") != "" && $this->table->tva_peppol_code=="")
+        if ( $g_parameter->MY_INVOICE_FORMAT == 'UBL21BEL'  && trim($this->table->vx_code??"") != "" && $this->table->tva_peppol_code=="")
         {
             $this->set_error("vx_code",_("Le code d'exemption TVA n' pas de sens sans code Facture électronique"));
         }
         // if tva_peppol_code is not S or Z then a VATEX code must be supplied
-        if ( $g_parameter->MY_INVOICE_FORMAT == 'UBL21BE' 
+        if ( $g_parameter->MY_INVOICE_FORMAT == 'UBL21BEL' 
                 && ! in_array($this->table->tva_peppol_code??"",["Z","S"]) 
                 && trim($this->table->vx_code??"" ) =="")
         {