diff --git a/layouts/404.html b/layouts/404.html
index 43a86ae..8f84922 100644
--- a/layouts/404.html
+++ b/layouts/404.html
@@ -5,3 +5,7 @@
 </main>
 <script>plausible("404",{ props: { path: document.location.pathname } });</script>
 {{ end }}
+
+{{ define "ads" }}
+<!-- No ads on 404 pages -->
+{{ end }}
diff --git a/layouts/_default/baseof.html b/layouts/_default/baseof.html
index fce04da..80ced1e 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/_default/baseof.html
@@ -28,8 +28,10 @@
 		<link rel="canonical" href="https://www.wimods.net{{ .RelPermalink }}">
 		
 		{{ partialCached "plausible" . }}
+		{{ block "ads" . -}}
 		<script async src="/js/quantcast-choice.js"></script>
 		<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-5218363098774955" crossorigin="anonymous"></script>
+		{{- end }}
 		
 	</head>
 	<body>
