diff --git a/lib/neography/rest/relationship_types.rb b/lib/neography/rest/relationship_types.rb
index e98c977..faada08 100644
--- a/lib/neography/rest/relationship_types.rb
+++ b/lib/neography/rest/relationship_types.rb
@@ -1,10 +1,14 @@
 module Neography
   class Rest
-    class RelationshipTypes < Properties
+    class RelationshipTypes
       extend Neography::Rest::Paths
 
       add_path :all,    "/relationship/types"
       
+      def initialize(connection)
+        @connection = connection
+      end
+            
       def list
         @connection.get(all_path)
       end