diff --git a/2018/header.html b/2018/header.html
index e03bf03..fad7961 100644
--- a/2018/header.html
+++ b/2018/header.html
@@ -19,7 +19,7 @@
     <div id="page">
 
       <header>
-	       <h1><a href="index.html"><img src="./img/sticker.jpg" alt="Ruby てらこった"></a></h1>
+	       <h1><a href="index.html"><img src="../img/sticker.jpg" alt="Ruby てらこった"></a></h1>
       </header>
       <nav>
         <ul>