diff --git a/lib/middleman-blog/uri_templates.rb b/lib/middleman-blog/uri_templates.rb
index d82e55c..a0cd666 100644
--- a/lib/middleman-blog/uri_templates.rb
+++ b/lib/middleman-blog/uri_templates.rb
@@ -76,10 +76,13 @@ def safe_parameterize(str, sep = '-')
 
         # Remove leading/trailing separator.
         parameterized_string.gsub!(/^#{re_sep}|#{re_sep}$/, '')
+
+        # Replace all _ with -
         parameterized_string.tr!('_', '-')
+
+        # Delete all ?
         parameterized_string.delete!('?')
 
-        # Replace all ?
         parameterized_string
       end