diff --git a/index/includes/header.php b/index/includes/header.php
index 450db60..5271bf8 100644
--- a/index/includes/header.php
+++ b/index/includes/header.php
@@ -3,10 +3,10 @@
 	<nav>
 		<div><a href="index.php" onclick=showF('tb')>Introduction</a></div>
 		<div><a href="page1-son.php" onclick=showF('tb')>Théorie basique du son</a></div>
-		<div><a href="page2-cs" onclick=showF('cs') >La chauve-souris</a></div>
-		<div><a href="page3-ex1" onclick=showF('ex1') >Expérience 1 : les ultrasons</a></div>
-		<div><a href="page4-ex2" onclick=showF('ex2') >Expérience 2 : Le robot</a></div>
-		<div><a href="page5-ccln" onclick=showF('ccln')>Conclusion</a></div>
-		<div><a href="page6-src" onclick=showF('src')>Sources</a></div>
+		<div><a href="page2-cs.php" onclick=showF('cs') >La chauve-souris</a></div>
+		<div><a href="page3-ex1.php" onclick=showF('ex1') >Expérience 1 : les ultrasons</a></div>
+		<div><a href="page4-ex2.php" onclick=showF('ex2') >Expérience 2 : Le robot</a></div>
+		<div><a href="page5-ccln.php" onclick=showF('ccln')>Conclusion</a></div>
+		<div><a href="page6-src.php" onclick=showF('src')>Sources</a></div>
 	</nav>
 </header>
\ No newline at end of file