diff --git a/web/src/sw.ts b/web/src/sw.ts
index 1d1bf6f..19b472a 100644
--- a/web/src/sw.ts
+++ b/web/src/sw.ts
@@ -18,7 +18,7 @@ register('maps', new StaleWhileRevalidate())
 
 try {
     // Only catch requests to the root URL (a regex doesn't do this).
-    registerRoute(({ url }) => url.pathname.startsWith('/'), createHandlerBoundToURL('index.html'))
+    registerRoute(({ url }) => url.pathname == '/', createHandlerBoundToURL('index.html'))
 } catch (e) {
     // This fails in dev as index.html is not in the manifest.
 }