diff --git a/OpenSim/Framework/Monitoring/JobEngine.cs b/OpenSim/Framework/Monitoring/JobEngine.cs
index 6c388b3b76..8c486e0df3 100644
--- a/OpenSim/Framework/Monitoring/JobEngine.cs
+++ b/OpenSim/Framework/Monitoring/JobEngine.cs
@@ -131,7 +131,15 @@ namespace OpenSim.Framework.Monitoring
                 finally
                 {
                     if(m_cancelSource != null)
+                    {
                         m_cancelSource.Dispose();
+                        m_cancelSource = null;
+                    }
+                    if (m_jobQueue != null)
+                    {
+                        m_jobQueue .Dispose();
+                        m_jobQueue = null;
+                    }
                 }
             }
         }