gistfile1.diff

diff --git i/vendor/plugins/addressable/lib/addressable.rb w/vendor/plugins/addressable/lib/addressable.rb
index 59e402c..054a9b5 100644
--- i/vendor/plugins/addressable/lib/addressable.rb
+++ w/vendor/plugins/addressable/lib/addressable.rb
@@ -116,7 +116,7 @@ module Addressable
 
       if has_latlng_fields?
         build_geocode unless geocode
-        if address.blank? and latitude.blank? and longitude.blank?
+        if address.blank? and latitude.to_f == 0.0 and longitude.to_f == 0.0
           geocode.destroy
         elsif latitude.present? and longitude.present?
           geocode.update_attributes(