diff --git a/src/tour-mode-parser.lisp b/src/tour-mode-parser.lisp
index be43bfd..f84ec21 100644
--- a/src/tour-mode-parser.lisp
+++ b/src/tour-mode-parser.lisp
@@ -24,7 +24,7 @@
 
 (defrule range-delimter #\-)
 
-(defrule list-delimiter #\Space)
+(defrule list-delimiter (+ (or #\Space #\,)))
 
 (defrule number (and digit (* digit))
   (:text t)