diff --git a/README.md b/README.md
index 0045524..7e08072 100644
--- a/README.md
+++ b/README.md
@@ -149,7 +149,7 @@ $lexer = new Lexer($config);
 
 $interpreter = new Interpreter();
 
-$interpreter->addObserver(function(array $columns) use ($pdo) {
+$interpreter->addObserver(function(array $columns, $url) use ($pdo) {
     $stmt = $pdo->prepare('INSERT INTO user (id, name, email) VALUES (?, ?, ?)');
     $stmt->execute($columns);
 });
@@ -180,7 +180,7 @@ $config->setDelimiter("\t");
 $lexer = new Lexer($config);
 
 $interpreter = new Interpreter();
-$interpreter->addObserver(function(array $row) use (&$temperature) {
+$interpreter->addObserver(function(array $row, $url) use (&$temperature) {
     $temperature[] = array(
         'temperature' => $row[0],
         'city'        => $row[1],
diff --git a/src/Goodby/CSV/Import/Protocol/InterpreterInterface.php b/src/Goodby/CSV/Import/Protocol/InterpreterInterface.php
index 85b246e..7b26b6f 100644
--- a/src/Goodby/CSV/Import/Protocol/InterpreterInterface.php
+++ b/src/Goodby/CSV/Import/Protocol/InterpreterInterface.php
@@ -11,5 +11,5 @@ interface InterpreterInterface
      * @param $line
      * @return void
      */
-    public function interpret($line);
+    public function interpret($line, $url);
 }
diff --git a/src/Goodby/CSV/Import/Standard/Interpreter.php b/src/Goodby/CSV/Import/Standard/Interpreter.php
index 0a49e30..ed1639a 100644
--- a/src/Goodby/CSV/Import/Standard/Interpreter.php
+++ b/src/Goodby/CSV/Import/Standard/Interpreter.php
@@ -33,7 +33,7 @@ class Interpreter implements InterpreterInterface
      * @return void
      * @throws \Goodby\CSV\Import\Protocol\Exception\InvalidLexicalException
      */
-    public function interpret($line)
+    public function interpret($line, $url)
     {
         $this->checkRowConsistency($line);
 
@@ -41,7 +41,7 @@ public function interpret($line)
             throw new InvalidLexicalException('line is must be array');
         }
 
-        $this->notify($line);
+        $this->notify($line, $url);
     }
 
     public function unstrict()
@@ -66,12 +66,12 @@ public function addObserver($observer)
      *
      * @param $line
      */
-    private function notify($line)
+    private function notify($line, $url)
     {
         $observers = $this->observers;
 
         foreach ($observers as $observer) {
-            $this->delegate($observer, $line);
+            $this->delegate($observer, $line, $url);
         }
     }
 
@@ -81,9 +81,9 @@ private function notify($line)
      * @param $observer
      * @param $line
      */
-    private function delegate($observer, $line)
+    private function delegate($observer, $line, $url)
     {
-        call_user_func($observer, $line);
+        call_user_func($observer, $line, $url);
     }
 
     /**
diff --git a/src/Goodby/CSV/Import/Standard/Lexer.php b/src/Goodby/CSV/Import/Standard/Lexer.php
index 7631791..548360e 100644
--- a/src/Goodby/CSV/Import/Standard/Lexer.php
+++ b/src/Goodby/CSV/Import/Standard/Lexer.php
@@ -60,7 +60,7 @@ public function parse($filename, InterpreterInterface $interpreter)
             if ($ignoreHeader && $lineNumber == 0 || (count($line) === 1 && empty($line[0]))) {
                 continue;
             }
-            $interpreter->interpret($line);
+            $interpreter->interpret($line, $url);
         }
 
         parse_str(str_replace(';', '&', $originalLocale), $locale_array);
diff --git a/src/Goodby/CSV/Import/Tests/Protocol/InterpreterTest.php b/src/Goodby/CSV/Import/Tests/Protocol/InterpreterTest.php
index a570375..a3b907a 100644
--- a/src/Goodby/CSV/Import/Tests/Protocol/InterpreterTest.php
+++ b/src/Goodby/CSV/Import/Tests/Protocol/InterpreterTest.php
@@ -12,6 +12,7 @@ class InterpreterTest extends \PHPUnit_Framework_TestCase
     public function testInterpreterInterface()
     {
         $line = array();
+        $url  = 'filepath';
 
         $interpreter = $this->getMock('\Goodby\CSV\Import\Protocol\InterpreterInterface');
 
@@ -20,7 +21,7 @@ public function testInterpreterInterface()
             ->with($this->identicalTo($line))
         ;
 
-        $interpreter->interpret($line);
+        $interpreter->interpret($line, $url);
     }
 
     /**
@@ -36,7 +37,8 @@ public function testInterpreterInterfaceWillThrownInvalidLexicalException()
         ;
 
         $line = "INVALID LEXICAL";
+        $url  = 'filepath';
 
-        $interpreter->interpret($line);
+        $interpreter->interpret($line, $url);
     }
 }