diff --git a/src/plugins/GraphViz.py b/src/plugins/GraphViz.py
index d6e98b189..b6741752b 100644
--- a/src/plugins/GraphViz.py
+++ b/src/plugins/GraphViz.py
@@ -291,7 +291,7 @@ class GraphVizDialog(Report.ReportDialog):
 
         if self.print_report.get_active ():
             os.environ["DOT"] = self.target_path
-            os.system ('dot -Tps "$DOT" | %s' %
+            os.system ('dot -Tps "$DOT" | %s &' %
                        self.get_print_dialog_app ())
 
 #------------------------------------------------------------------------