diff --git a/lib/acl9/model_extensions.rb b/lib/acl9/model_extensions.rb
index c26ba6b..26f2ade 100644
--- a/lib/acl9/model_extensions.rb
+++ b/lib/acl9/model_extensions.rb
@@ -91,15 +91,20 @@ def acts_as_authorization_object(options = {})
         has_many :accepted_roles, :as => :authorizable, :class_name => role, :dependent => :destroy
 
         has_many :"#{subj_table}",
-          :finder_sql => proc { "SELECT DISTINCT #{subj_table}.* " +
+          -> { 
+            subj_table.constantize.find_by_sql("SELECT DISTINCT #{subj_table}.* " +
                                 "FROM #{subj_table} INNER JOIN #{join_table} ON #{subj_col}_id = #{subj_table}.id " +
                                 "INNER JOIN #{role_table} ON #{role_table}.id = #{role.underscore}_id " +
-                                "WHERE authorizable_type = '#{self.class.base_class.to_s}' AND authorizable_id = #{id} "},
-          :counter_sql => proc { "SELECT COUNT(DISTINCT #{subj_table}.id)" + 
-                                 "FROM #{subj_table} INNER JOIN #{join_table} ON #{subj_col}_id = #{subj_table}.id " +
-                                 "INNER JOIN #{role_table} ON #{role_table}.id = #{role.underscore}_id " +
-                                 "WHERE authorizable_type = '#{self.class.base_class.to_s}' AND authorizable_id = #{id} "},
-          :readonly => true
+                                "WHERE authorizable_type = '#{self.class.base_class.to_s}' AND authorizable_id = #{id} ")
+          },
+          :readonly => true do
+            def count
+              subj_table.constantize.count_by_sql("SELECT COUNT(DISTINCT #{subj_table}.id)" + 
+                    "FROM #{subj_table} INNER JOIN #{join_table} ON #{subj_col}_id = #{subj_table}.id " +
+                    "INNER JOIN #{role_table} ON #{role_table}.id = #{role.underscore}_id " +
+                    "WHERE authorizable_type = '#{self.class.base_class.to_s}' AND authorizable_id = #{id} ")
+            end
+          end
 
         include Acl9::ModelExtensions::ForObject
       end