diff --git a/assets/test-themes.html b/assets/test-themes.html
new file mode 100644
index 0000000..a42bbd3
--- /dev/null
+++ b/assets/test-themes.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Test themes &ndash; Sausagewiki</title>
+        <link href="themes.css" rel="stylesheet">
+        <style>
+            .themed {
+                padding: 10px;
+                background: var(--theme-main);
+                color: var(--theme-text);
+            }
+            .link {
+                color: var(--theme-link);
+            }
+            .proto {
+                display: none;
+            }
+        </style>
+    </head>
+    <body>
+        <div class="proto">
+            <div class="themed">The <span class="link">quick</span> brown <span class="link">dog</span> jumps over the lazy log</div>
+        </div>
+        <script>
+            const themes = ["red", "pink", "purple", "deep-purple", "indigo", "blue", "light-blue", "cyan", "teal", "green", "light-green", "lime", "yellow", "amber", "orange", "deep-orange", "brown", "gray", "blue-gray"];
+            const body = document.querySelector("body");
+            const proto = document.querySelector(".proto");
+            for (theme of themes) {
+                const block = proto.cloneNode(true);
+                block.className = `theme-${theme}`;
+                body.appendChild(block);
+            }
+        </script>
+    </body>
+</html>
diff --git a/src/wiki_lookup.rs b/src/wiki_lookup.rs
index 76e2ea1..26bb9f6 100644
--- a/src/wiki_lookup.rs
+++ b/src/wiki_lookup.rs
@@ -82,6 +82,7 @@ fn fs_lookup(root: &str, path: &str) ->
     let extension = path.rsplitn(2, ".").next();
 
     let content_type = match extension {
+        Some("html") => "text/html",
         Some("css") => "text/css",
         Some("js") => "application/javascript",
         Some("woff") => "application/font-woff",
