diff --git a/app/services/map_export_service.rb b/app/services/map_export_service.rb
index fb7c750a..80c0c4fe 100644
--- a/app/services/map_export_service.rb
+++ b/app/services/map_export_service.rb
@@ -1,9 +1,11 @@
 # frozen_string_literal: true
 class MapExportService
-  attr_reader :user, :map
-  def initialize(user, map)
+  attr_reader :user, :map, :base_url
+
+  def initialize(user, map, opts = {})
     @user = user
     @map = map
+    @base_url = opts[:base_url] || 'https://metamaps.cc'
   end
 
   def json
@@ -24,10 +26,20 @@ class MapExportService
 
   def rdf
     output = ''
-    output += rdf_header
-    output += rdf_mappers
-    output += rdf_topics
-    output += rdf_synapses
+    output += "PREFIX d: <#{base_url}/maps/#{map.id}>\n"
+    output += "PREFIX mm: <#{base_url}/owl/map.owl.ttl>\n"
+    output += "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n"
+    output += "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n"
+    output += "\n"
+    map.contributors.each do |mapper|
+      output += mapper.as_rdf
+    end
+    map.topics.each do |topic|
+      output += topic.as_rdf
+    end
+    map.synapses.each do |synapse|
+      output += synapse.as_rdf
+    end
     output
   end
 
@@ -96,38 +108,4 @@ class MapExportService
 
     spreadsheet
   end
-
-  def rdf_header
-    output = ''
-    output += "PREFIX d: <https://metamaps.cc/maps/#{map.id}>\n"
-    output += "PREFIX mm: <https://metamaps.cc/owl/map.owl.ttl>\n"
-    output += "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n"
-    output += "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n"
-    output += "\n"
-    output
-  end
-
-  def rdf_mappers
-    output = ''
-    map.contributors.each do |mapper|
-      output += mapper.as_rdf
-    end
-    output 
-  end
-
-  def rdf_topics
-    output = ''
-    map.topics.each do |topic|
-      output += topic.as_rdf
-    end
-    output
-  end
-
-  def rdf_synapses
-    output = ''
-    map.synapses.each do |synapse|
-      output += synapse.as_rdf
-    end
-    output
-  end
 end