diff --git a/cmd/smweb/main.go b/cmd/smweb/main.go
index 694ff9c..4e81483 100644
--- a/cmd/smweb/main.go
+++ b/cmd/smweb/main.go
@@ -19,6 +19,8 @@ func main() {
 	} else {
 		fs = http.Dir(os.Getenv("SM_STATIC"))
 	}
+	// XXX: beware: I've copy/pasted this twice now and been confused because
+	// I ought to have been using my own servemux
 	http.Handle(
 		"/",
 		http.FileServer(fs),