diff --git a/lib/rdf/n3.rb b/lib/rdf/n3.rb
index a64dfab..ccbb1d0 100644
--- a/lib/rdf/n3.rb
+++ b/lib/rdf/n3.rb
@@ -23,7 +23,6 @@ module N3
     require 'rdf/n3/format'
     require 'rdf/n3/vocab'
     require 'rdf/n3/patches/array_hacks'
-    require 'rdf/n3/patches/list'
     autoload :Meta,    'rdf/n3/reader/meta'
     autoload :Parser,  'rdf/n3/reader/parser'
     autoload :Reader,  'rdf/n3/reader'
diff --git a/lib/rdf/n3/patches/list.rb b/lib/rdf/n3/patches/list.rb
deleted file mode 100644
index 72dde2a..0000000
--- a/lib/rdf/n3/patches/list.rb
+++ /dev/null
@@ -1,36 +0,0 @@
-module RDF
-  class List
-    ##
-    # Validate the list ensuring that
-    # * rdf:rest values are all BNodes are nil
-    # * rdf:type, if it exists, is rdf:List
-    # * each subject has no properties other than single-valued rdf:first, rdf:rest
-    #   other than for the first node in the list
-    # @return [Boolean]
-    def valid?
-      li = subject
-      while li != RDF.nil do
-        rest = nil
-        firsts = rests = 0
-        @graph.query(:subject => li) do |st|
-          case st.predicate
-          when RDF.type
-            # Be tollerant about rdf:type entries, as some OWL vocabularies use it excessively
-          when RDF.first
-            firsts += 1
-          when RDF.rest
-            rest = st.object
-            return false unless rest.node? || rest == RDF.nil
-            rests += 1
-          else
-            # First node may have other properties
-            return false unless li == subject
-          end
-        end
-        return false unless firsts == 1 && rests == 1
-        li = rest
-      end
-      true
-    end
-  end
-end
\ No newline at end of file