diff --git a/lib/PhpParser/Lexer.php b/lib/PhpParser/Lexer.php
index eb350c7..182bfd5 100644
--- a/lib/PhpParser/Lexer.php
+++ b/lib/PhpParser/Lexer.php
@@ -32,10 +32,14 @@ class Lexer
      * @throws Error on lexing errors (unterminated comment or unexpected character)
      */
     public function startLexing($code) {
+        $scream = ini_set('xdebug.scream', 0);
+
         $this->resetErrors();
         $this->tokens = @token_get_all($code);
         $this->handleErrors();
 
+        ini_set('xdebug.scream', $scream);
+
         $this->code = $code; // keep the code around for __halt_compiler() handling
         $this->pos  = -1;
         $this->line =  1;