diff --git a/collects/mred/lang/reader.ss b/collects/mred/lang/reader.ss
index 2a0d3431..de4ac155 100644
--- a/collects/mred/lang/reader.ss
+++ b/collects/mred/lang/reader.ss
@@ -1,2 +1,2 @@
-(module reader syntax/module-reader
-  mred)
+#lang s-exp syntax/module-reader
+mred
diff --git a/collects/mzscheme/lang/reader.ss b/collects/mzscheme/lang/reader.ss
index 6a8e851c..bc02ffaa 100644
--- a/collects/mzscheme/lang/reader.ss
+++ b/collects/mzscheme/lang/reader.ss
@@ -1,2 +1,2 @@
-(module reader syntax/module-reader
-  mzscheme)
+#lang s-exp syntax/module-reader
+mzscheme
diff --git a/collects/scheme/gui/lang/reader.ss b/collects/scheme/gui/lang/reader.ss
index 51f651c1..186a775b 100644
--- a/collects/scheme/gui/lang/reader.ss
+++ b/collects/scheme/gui/lang/reader.ss
@@ -1,2 +1,2 @@
-(module reader syntax/module-reader
-  scheme/gui)
+#lang s-exp syntax/module-reader
+scheme/gui