diff --git a/src/Fenom/Tokenizer.php b/src/Fenom/Tokenizer.php
index acd8367..dfa3f3a 100644
--- a/src/Fenom/Tokenizer.php
+++ b/src/Fenom/Tokenizer.php
@@ -254,6 +254,9 @@ class Tokenizer
      */
     public function current()
     {
+        if (is_null($this->curr)) {
+            return null;
+        }
         return $this->curr[1];
     }