diff --git a/includes/nav.php b/includes/nav.php
index 62e92a3..7ca19bf 100644
--- a/includes/nav.php
+++ b/includes/nav.php
@@ -3,9 +3,9 @@
     <p>This cat rocks!</p>
     <p>A homepage for my fine feline friend, Baxter</p>
     <nav>
-        <a href="index.html">Home</a>
-        <a href="loveletter.html">Love you, Baxter</a>
-        <a href="behavior.html">Baxter's behaviors</a>
-        <a href="about.html">About this site</a>
+        <a href="index.php">Home</a>
+        <a href="loveletter.php">Love you, Baxter</a>
+        <a href="behavior.php">Baxter's behaviors</a>
+        <a href="about.php">About this site</a>
     </nav>
 </header>