diff --git a/bibtexbrowser.php b/bibtexbrowser.php
index 036c4df..1c9fdc9 100755
--- a/bibtexbrowser.php
+++ b/bibtexbrowser.php
@@ -20,6 +20,10 @@ bibtexbrowser is a PHP script to browse and search bib entries from BibTex files
 
 You can also include your publications list into your home page:
 <?php
+session_start(); //should be at the very top of the script
+// => avoid reparsing the bib file for each request;
+// => run faster;
+
 // the bib file
 $_GET['bib']='mybib.bib';
 // the request