diff --git a/htdocs/societe/class/societe.class.php b/htdocs/societe/class/societe.class.php
index 4cb6fe8e973..2b519a686cd 100644
--- a/htdocs/societe/class/societe.class.php
+++ b/htdocs/societe/class/societe.class.php
@@ -598,24 +598,6 @@ class Societe extends CommonObject
         return $result;
     }
 
-    /**
-     * Update localtax value of third party
-     * @param	int		$id         id societe
-     * @param	int		$local		Localtax to update
-     * @param 	double	$value		value of localtax
-     */
-    function update_localtax($id, $local, $value)
-    {
-    	global $db;
-    	$sql  = "UPDATE ".MAIN_DB_PREFIX."societe SET ";
-    	if($local==1) $sql .= "localtax1_value = '" .$value."'";
-    	else $sql.="localtax2_value='".$value."'";
-    	$sql.="WHERE rowid=".$id;
-    	 
-    	$resql=$this->db->query($sql);
-    	 
-    }
-    
     /**
      *      Update parameters of third party
      *
@@ -673,7 +655,7 @@ class Societe extends CommonObject
         // Local taxes
         $this->localtax1_assuj=trim($this->localtax1_assuj);
         $this->localtax2_assuj=trim($this->localtax2_assuj);
-        
+
         $this->localtax1_value=trim($this->localtax1_value);
         $this->localtax2_value=trim($this->localtax2_value);
 
@@ -782,10 +764,10 @@ class Societe extends CommonObject
             		$sql .=",localtax1_value =".$this->localtax1_value;
             	}
             	else $sql .=",localtax1_value =0.000";
-            	 
+
             }
             else $sql .=",localtax1_value =0.000";
-            
+
             if($this->localtax2_assuj==1)
             {
             	if($this->localtax2_value!='')
@@ -793,7 +775,7 @@ class Societe extends CommonObject
             		$sql .=",localtax2_value =".$this->localtax2_value;
             	}
             	else $sql .=",localtax2_value =0.000";
-            
+
             }
             else $sql .=",localtax2_value =0.000";
 
@@ -1074,7 +1056,7 @@ class Societe extends CommonObject
                 // Local Taxes
                 $this->localtax1_assuj      = $obj->localtax1_assuj;
                 $this->localtax2_assuj      = $obj->localtax2_assuj;
-                
+
                 $this->localtax1_value		= $obj->localtax1_value;
                 $this->localtax2_value		= $obj->localtax2_value;
 
diff --git a/htdocs/societe/soc.php b/htdocs/societe/soc.php
index 7b92da19fd9..a0eec6ffbc8 100644
--- a/htdocs/societe/soc.php
+++ b/htdocs/societe/soc.php
@@ -101,22 +101,22 @@ if (empty($reshook))
         // We defined value code_fournisseur
         $_POST["code_fournisseur"]="Acompleter";
     }
-    
+
     if($action=='set_localtax1')
     {
     	//obtidre selected del combobox
     	$value=GETPOST('lt1');
     	$object = new Societe($db);
-    	$res=$object->update_localtax($socid, 1, $value);
-    
+    	$object->fetch($socid);
+    	$res=$object->setValueFrom('localtax1_value', $value);
     }
     if($action=='set_localtax2')
     {
     	//obtidre selected del combobox
     	$value=GETPOST('lt2');
     	$object = new Societe($db);
-    	$res=$object->update_localtax($socid, 2, $value);
-    
+    	$object->fetch($socid);
+    	$res=$object->setValueFrom('localtax2_value', $value);
     }
 
     // Add new third party
@@ -175,7 +175,7 @@ if (empty($reshook))
         // Local Taxes
         $object->localtax1_assuj       = GETPOST('localtax1assuj_value');
         $object->localtax2_assuj       = GETPOST('localtax2assuj_value');
-        
+
         $object->localtax1_value	   = GETPOST('lt1');
         $object->localtax2_value	   = GETPOST('lt2');
 
@@ -679,7 +679,7 @@ else
         //Local Taxes
         $object->localtax1_assuj	= GETPOST('localtax1assuj_value');
         $object->localtax2_assuj	= GETPOST('localtax2assuj_value');
-        
+
         $object->localtax1_value	=GETPOST('lt1');
         $object->localtax2_value	=GETPOST('lt2');
 
@@ -1174,7 +1174,7 @@ else
                 //Local Taxes
                 $object->localtax1_assuj		= GETPOST('localtax1assuj_value');
                 $object->localtax2_assuj		= GETPOST('localtax2assuj_value');
-                
+
                 $object->localtax1_value		=GETPOST('lt1');
                 $object->localtax2_value		=GETPOST('lt2');
 
@@ -1195,8 +1195,8 @@ else
             if($object->localtax2_assuj==0){
             	$sub2=0;
             }else{$sub2=1;}
-            
-            
+
+
             print "\n".'<script type="text/javascript">';
             print '$(document).ready(function () {
     			var val='.$sub.';
@@ -1231,11 +1231,11 @@ else
     					$(".cblt2").hide();
     				}
     			});
-            
+
                });';
             print '</script>'."\n";
-            
-            
+
+
             if ($conf->use_javascript_ajax)
             {
                 print "\n".'<script type="text/javascript" language="javascript">';
@@ -1465,11 +1465,11 @@ else
                 	$formcompany->select_localtax(1,$object->localtax1_value, "lt1");
                 	print '</span>';
                 }
-	                	
+
                 print '</td><td>'.$langs->transcountry("LocalTax2IsUsed",$mysoc->country_code).'</td><td>';
                 print $form->selectyesno('localtax2assuj_value',$object->localtax2_assuj,1);
 	            if  (! isOnlyOneLocalTax(2))
-	            { 
+	            {
 	            		print '<span class="cblt2">     '.$langs->transcountry("Type",$mysoc->country_code).': ';
 	                	$formcompany->select_localtax(2,$object->localtax2_value, "lt2");
                 		print '</span>';
@@ -1860,7 +1860,7 @@ else
             		print '<td>'.$object->localtax1_value.'</td>';
             	}
             	print '</tr></form>';
-            
+
             }
         }
         elseif($mysoc->localtax2_assuj=="1" && $mysoc->localtax1_assuj!="1")
@@ -1870,7 +1870,7 @@ else
             print '</td><tr>';
             if($object->localtax2_assuj=="1" && (! isOnlyOneLocalTax(2)))
             {
-            
+
             	print '<form method="post" action="'.$_SERVER['PHP_SELF'].'?socid='.$object->id.'">';
             	print '<input type="hidden" name="action" value="set_localtax2">';
             	print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
@@ -1883,7 +1883,7 @@ else
             		print '<td>'.$object->localtax2_value.'</td>';
             	}
             	print '</tr></form>';
-            	 
+
             }
         }
 /*
@@ -2053,7 +2053,7 @@ else
 
 			print '<br>';
 			print_titre($langs->trans($titreform));
-			
+
 			// Define output language
 			$outputlangs = $langs;
 			$newlang = '';