diff --git a/plugins/virtuoso/lib/virtuoso_plugin.rb b/plugins/virtuoso/lib/virtuoso_plugin.rb
index 7522eb6..ebf6ac6 100644
--- a/plugins/virtuoso/lib/virtuoso_plugin.rb
+++ b/plugins/virtuoso/lib/virtuoso_plugin.rb
@@ -17,15 +17,25 @@ class VirtuosoPlugin < Noosfero::Plugin
   end
 
   def virtuoso_client
-    @virtuoso_client ||= RDF::Virtuoso::Repository.new("#{settings.virtuoso_uri}/sparql", :update_uri => "#{settings.virtuoso_uri}/sparql-auth", :username => settings.virtuoso_username, :password => settings.virtuoso_password, :auth_method => 'digest', :timeout => 30)
+    @virtuoso_client ||= virtuoso_client_builder(settings.virtuoso_uri, settings.virtuoso_username, settings.virtuoso_password)
   end
-  
+
+  def virtuoso_readonly_client
+    @virtuoso_readonly_client ||= virtuoso_client_builder(settings.virtuoso_uri, settings.virtuoso_readonly_username, settings.virtuoso_readonly_password)
+  end
+
   def js_files
     ['edit-server-list']
-  end  
+  end
 
   def stylesheet?
     true
   end
 
+  protected
+
+  def virtuoso_client_builder(uri, username, password)
+    RDF::Virtuoso::Repository.new("#{uri}/sparql", :update_uri => "#{uri}/sparql-auth", :username => username, :password => password, :auth_method => 'digest', :timeout => 30)
+  end
+
 end
diff --git a/plugins/virtuoso/lib/virtuoso_plugin/triples_template.rb b/plugins/virtuoso/lib/virtuoso_plugin/triples_template.rb
index e541f57..c4025da 100644
--- a/plugins/virtuoso/lib/virtuoso_plugin/triples_template.rb
+++ b/plugins/virtuoso/lib/virtuoso_plugin/triples_template.rb
@@ -37,7 +37,7 @@ class VirtuosoPlugin::TriplesTemplate < Article
 
   def template_content
     begin
-      results = plugin.virtuoso_client.query(query)
+      results = plugin.virtuoso_readonly_client.query(query)
       liquid_template = Liquid::Template.parse(template)
       page = liquid_template.render('results' => results)
       transform_html(page)
diff --git a/plugins/virtuoso/test/unit/triples_template_test.rb b/plugins/virtuoso/test/unit/triples_template_test.rb
index ed20532..eb18e1e 100644
--- a/plugins/virtuoso/test/unit/triples_template_test.rb
+++ b/plugins/virtuoso/test/unit/triples_template_test.rb
@@ -10,8 +10,8 @@ class TriplesTemplateTest < ActiveSupport::TestCase
 
   should 'evaluate template using query results' do
     article.stubs(:plugin).returns(mock)
-    article.plugin.expects(:virtuoso_client).at_least_once.returns(mock)
-    article.plugin.virtuoso_client.expects(:query).returns([{'var' => 'Hello '}, {'var' => 'World'}])
+    article.plugin.expects(:virtuoso_readonly_client).at_least_once.returns(mock)
+    article.plugin.virtuoso_readonly_client.expects(:query).returns([{'var' => 'Hello '}, {'var' => 'World'}])
     article.template = "{% for row in results %}{{row.var}}{% endfor %}"
 
     assert_match /Hello World/, article.template_content
@@ -19,8 +19,8 @@ class TriplesTemplateTest < ActiveSupport::TestCase
 
   should 'display error message when failed to execute the query' do
     article.stubs(:plugin).returns(mock)
-    article.plugin.expects(:virtuoso_client).at_least_once.returns(mock)
-    article.plugin.virtuoso_client.expects(:query).raises(RuntimeError.new)
+    article.plugin.expects(:virtuoso_readonly_client).at_least_once.returns(mock)
+    article.plugin.virtuoso_readonly_client.expects(:query).raises(RuntimeError.new)
     article.template = "{% for row in results %}{{row.var}}{% endfor %}"
 
     assert_equal "Failed to process the template", article.template_content
@@ -28,8 +28,8 @@ class TriplesTemplateTest < ActiveSupport::TestCase
 
   should 'transform css into inline stylesheet' do
     article.stubs(:plugin).returns(mock)
-    article.plugin.expects(:virtuoso_client).at_least_once.returns(mock)
-    article.plugin.virtuoso_client.expects(:query).returns([{'var' => 'Hello '}, {'var' => 'World'}])
+    article.plugin.expects(:virtuoso_readonly_client).at_least_once.returns(mock)
+    article.plugin.virtuoso_readonly_client.expects(:query).returns([{'var' => 'Hello '}, {'var' => 'World'}])
     article.template = "{% for row in results %}<p>{{row.var}}</p>{% endfor %}"
     article.stylesheet = "p {color: red}"
 
@@ -40,8 +40,8 @@ class TriplesTemplateTest < ActiveSupport::TestCase
 
   should 'do not allow js injection' do
     article.stubs(:plugin).returns(mock)
-    article.plugin.expects(:virtuoso_client).at_least_once.returns(mock)
-    article.plugin.virtuoso_client.expects(:query).returns([{'var' => RDF::Literal.new('<script>alert("hello");</script>')}])
+    article.plugin.expects(:virtuoso_readonly_client).at_least_once.returns(mock)
+    article.plugin.virtuoso_readonly_client.expects(:query).returns([{'var' => RDF::Literal.new('<script>alert("hello");</script>')}])
     article.template = "{% for row in results %}{{row.var}}{% endfor %}"
 
     assert_no_match /<script>/, article.template_content
diff --git a/plugins/virtuoso/test/unit/virtuoso_plugin_test.rb b/plugins/virtuoso/test/unit/virtuoso_plugin_test.rb
index d42a29d..eb35caf 100644
--- a/plugins/virtuoso/test/unit/virtuoso_plugin_test.rb
+++ b/plugins/virtuoso/test/unit/virtuoso_plugin_test.rb
@@ -4,13 +4,29 @@ class VirtuosoPluginTest < ActiveSupport::TestCase
 
   def setup
     @environment = Environment.default
-    @plugin = VirtuosoPlugin.new
+    @plugin = VirtuosoPlugin.new(self)
   end
 
-  attr_reader :plugin
+  attr_reader :plugin, :environment
 
   should 'define a new content' do
     assert_equal [VirtuosoPlugin::TriplesTemplate], plugin.content_types
   end
 
+  should 'create a client for virtuoso using admin account' do
+    plugin.stubs(:settings).returns(mock)
+    plugin.settings.expects(:virtuoso_uri)
+    plugin.settings.expects(:virtuoso_username)
+    plugin.settings.expects(:virtuoso_password)
+    plugin.virtuoso_client
+  end
+
+  should 'create a client for virtuoso using a read-only account' do
+    plugin.stubs(:settings).returns(mock)
+    plugin.settings.expects(:virtuoso_uri)
+    plugin.settings.expects(:virtuoso_readonly_username)
+    plugin.settings.expects(:virtuoso_readonly_password)
+    plugin.virtuoso_readonly_client
+  end
+
 end
diff --git a/plugins/virtuoso/views/virtuoso_plugin_admin/index.html.erb b/plugins/virtuoso/views/virtuoso_plugin_admin/index.html.erb
index 24ef897..7d4fad2 100644
--- a/plugins/virtuoso/views/virtuoso_plugin_admin/index.html.erb
+++ b/plugins/virtuoso/views/virtuoso_plugin_admin/index.html.erb
@@ -6,8 +6,10 @@
 
   <strong>
     <%= labelled_form_field _('Virtuoso URL:'), f.text_field(:virtuoso_uri) %>
-    <%= labelled_form_field _('Virtuoso Username:'), f.text_field(:virtuoso_username) %>
-    <%= labelled_form_field _('Virtuoso Password:'), f.password_field(:virtuoso_password) %>
+    <%= labelled_form_field _('Virtuoso Admin Username:'), f.text_field(:virtuoso_username) %>
+    <%= labelled_form_field _('Virtuoso Admin Password:'), f.password_field(:virtuoso_password) %>
+    <%= labelled_form_field _('Virtuoso Read-Only Username:'), f.text_field(:virtuoso_readonly_username) %>
+    <%= labelled_form_field _('Virtuoso Read-Only Password:'), f.password_field(:virtuoso_readonly_password) %>
     <%= labelled_form_field _('DSpace URL:'), f.text_field(:dspace_uri) %>
   </strong>
 
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libgit2 0.21.2