diff --git a/lib/marked.js b/lib/marked.js
index c797e7add1..1ae353e9dd 100644
--- a/lib/marked.js
+++ b/lib/marked.js
@@ -108,7 +108,7 @@ block.gfm = merge({}, block.normal, {
 block.tables = merge({}, block.gfm);
 
 /**
- * Pedantic grammar
+ * Pedantic grammar (original John Gruber's loose markdown specification)
  */
 
 block.pedantic = merge({}, block.normal, {