diff --git a/map/app1/koukyo.html b/map/app1/koukyo.html
index 6889281..f89235f 100644
--- a/map/app1/koukyo.html
+++ b/map/app1/koukyo.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="ja">
 <head>
-<title>皇居マップ（半径５km以内）</title>
+<title>皇居マップ（半径5km以内）</title>
 <meta name="viewport" content="width=device-width, initial-scale=1" />
 <link rel="stylesheet" href="../src/leaflet.css" />	<!-- (1) -->
 <script src="../src/leaflet.js"></script>
