diff --git a/go/twitterchiver/viewer/viewer.go b/go/twitterchiver/viewer/viewer.go
index 8be3a35e23..23df2100c9 100644
--- a/go/twitterchiver/viewer/viewer.go
+++ b/go/twitterchiver/viewer/viewer.go
@@ -140,7 +140,7 @@ func main() {
 		fmt.Fprintf(rw, "<p>%s</p>", wrap)
 	}
 
-	authR.Handle("/media/{path}", http.StripPrefix("/media/", http.FileServer(http.Dir(*mediaDirectory))))
+	authR.PathPrefix("/media/").Handler(http.StripPrefix("/media/", http.FileServer(http.Dir(*mediaDirectory))))
 	authR.HandleFunc("/", func(rw http.ResponseWriter, r *http.Request) {
 		ctx := r.Context()
 		user := userFromContext(ctx)