index 7f29927..45c194e 100644
--- a/geiser-chez.el
+++ b/geiser-chez.el
@@ -40,7 +40,7 @@
   :group 'geiser)
 
 (geiser-custom--defcustom geiser-chez-binary
-    "scheme"
+    "chezscheme"
   "Name to use to call the Chez Scheme executable when starting a REPL."
   :type '(choice string (repeat string))
   :group 'geiser-chez)