diff --git a/examples/json.pegjs b/examples/json.pegjs
index e77ac80..374768b 100644
--- a/examples/json.pegjs
+++ b/examples/json.pegjs
@@ -145,6 +145,6 @@ unescaped
 
 // ----- Core ABNF Rules -----
 
-// See RFC 4234, Appendix B (http://tools.ietf.org/html/rfc4627).
+// See RFC 4234, Appendix B (http://tools.ietf.org/html/rfc4234).
 DIGIT  = [0-9]
 HEXDIG = [0-9a-f]i