diff --git a/lib/jekyll/filters.rb b/lib/jekyll/filters.rb
index d318977f..183c9c58 100644
--- a/lib/jekyll/filters.rb
+++ b/lib/jekyll/filters.rb
@@ -15,11 +15,11 @@ module Jekyll
       converter.convert(input)
     end
 
-    # Convert a Markdown string into HTML output.
+    # Convert quotes into smart quotes.
     #
-    # input - The Markdown String to convert.
+    # input - The String to convert.
     #
-    # Returns the HTML formatted String.
+    # Returns the smart-quotified String.
     def smartify(input)
       site = @context.registers[:site]
       converter = site.find_converter_instance(Jekyll::Converters::SmartyPants)