diff --git a/src/FileSdIBase.php b/src/FileSdIBase.php
index 92a4283..57650fc 100644
--- a/src/FileSdIBase.php
+++ b/src/FileSdIBase.php
@@ -35,7 +35,7 @@ public function __construct( \StdClass $parametersIn = null )
             if (!property_exists($parametersIn, 'File')) {
                 throw new \Exception("Cannot find property 'File'");
             }
-        
+	    
             $this->NomeFile = $parametersIn->NomeFile;
             $this->File = $parametersIn->File;
             $this->removeBOM();
@@ -52,7 +52,6 @@ public function import( $file )
         if (false === is_readable($file)) {
             throw new \Exception("'$file' not found or not readable");
         }
-
         $this->NomeFile = basename($file);
         $this->File = file_get_contents($file);
         $this->removeBOM();
@@ -61,15 +60,10 @@ public function import( $file )
     }
 
     /**
-     * Remove UTF-8 BOM
-     *
-     * Credits: https://forum.italia.it/u/Francesco_Biegi
-     * See https://forum.italia.it/t/risolto-notifica-di-scarto-content-is-not-allowed-in-prolog/5798/7
+     * Do nothing
      */
     public function removeBOM()
     {
-        $this->File = str_replace("\xEF\xBB\xBF", '', $this->File);
-
         return $this;
     }
 }
diff --git a/src/RispostaRiceviFatture.php b/src/RispostaRiceviFatture.php
index d1f3a46..73a2904 100644
--- a/src/RispostaRiceviFatture.php
+++ b/src/RispostaRiceviFatture.php
@@ -24,6 +24,7 @@
 class RispostaRiceviFatture
 {
     const ER01 = 'ER01';
+    const ER00 = 'ER00';
 
     public $Esito = self::ER01;