diff --git a/lib/target_version_graph_hook.rb b/lib/target_version_graph_hook.rb
index 74130be..fe9ea5b 100644
--- a/lib/target_version_graph_hook.rb
+++ b/lib/target_version_graph_hook.rb
@@ -3,7 +3,7 @@ class TargetVersionGraphHook < Redmine::Hook::ViewListener
   def view_versions_show_bottom(context = { })
   	if !context[:version].fixed_issues.empty?
   		output = "<fieldset id='target_version_graph'><legend>#{ l(:label_graphs_total_vs_closed_issues) }</legend>"
-		output << tag("embed", :width => "100%", :height => 300, :type => "image/svg+xml", :src => url_for(:controller => 'graphs', :action => 'target_version_graph', :id => context[:version]))
+		output << tag("embed", :width => "100%", :height => 300, :type => "image/svg+xml", :src => File.join(Redmine::Utils.relative_url_root, url_for(:controller => 'graphs', :action => 'target_version_graph', :id => context[:version])))
 		output << "</fieldset>"
 		return output
 	end