diff --git a/spring-boot-samples/spring-boot-sample-devtools/src/main/resources/templates/layout.html b/spring-boot-samples/spring-boot-sample-devtools/src/main/resources/templates/layout.html
index c4e7d6d527a..d996ef9dd52 100644
--- a/spring-boot-samples/spring-boot-sample-devtools/src/main/resources/templates/layout.html
+++ b/spring-boot-samples/spring-boot-sample-devtools/src/main/resources/templates/layout.html
@@ -3,7 +3,7 @@
 	xmlns:layout="http://www.ultraq.net.nz/web/thymeleaf/layout">
 <head>
 <title>Layout</title>
-<link rel="stylesheet" href="/css/application.css" />
+<link rel="stylesheet" th:href="@{/css/application.css}" />
 </head>
 <body>
 	<h1 layout:fragment="header">Header</h1>
