diff --git a/lib/geocoder/cache.rb b/lib/geocoder/cache.rb
index d88241bedf25cff63a773cdb1c592aa68bbb66db..05bf5bb51655b00a57d5763dbad1ce44783873fd 100644
--- a/lib/geocoder/cache.rb
+++ b/lib/geocoder/cache.rb
@@ -49,7 +49,8 @@ module Geocoder
 
     private # ----------------------------------------------------------------
 
-    attr_reader :prefix, :store
+    def prefix; @prefix; end
+    def store; @store; end
 
     ##
     # Cache key for a given URL.