diff --git a/koukyo.html b/koukyo.html
index 93e22e2..c181e74 100644
--- a/koukyo.html
+++ b/koukyo.html
@@ -16,6 +16,6 @@
 <h1>My First Map!</h1>
 <div id="mymap"></div>		<!-- (3) -->
 <!-- #mymap であるdivを配置したあとで (4) -->
-<script type="text/javascript" src="domon.js" charset="utf-8"></script>
+<script type="text/javascript" src="koukyo.js" charset="utf-8"></script>
 </body>
 </html>