diff --git a/lib/von/counter.rb b/lib/von/counter.rb
index eda39c5..76bd67d 100644
--- a/lib/von/counter.rb
+++ b/lib/von/counter.rb
@@ -16,6 +16,7 @@ def options
 
     # Returns the Redis hash key used for storing counts for this Counter
     def hash_key
+      # TODO: prefix counter with counter
       @hash_key ||= "#{Von.config.namespace}:#{@field}"
     end