diff --git a/collects/mzlib/list.ss b/collects/mzlib/list.ss
index 4457338..ed658ee 100644
--- a/collects/mzlib/list.ss
+++ b/collects/mzlib/list.ss
@@ -1,4 +1,4 @@
-#lang racket/base
+#lang scheme/base
 
 ;; The `first', etc. operations in this library
 ;;  work on pairs, not lists.