diff --git a/OpenSim/Region/Environment/Scenes/Scene.cs b/OpenSim/Region/Environment/Scenes/Scene.cs
index 280e09afe6..250c884961 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.cs
@@ -84,7 +84,7 @@ namespace OpenSim.Region.Environment.Scenes
         private int m_RestartTimerCounter;
         private readonly Timer m_restartTimer = new Timer(15000); // Wait before firing
         private int m_incrementsof15seconds = 0;
-        private bool m_backingup = false;
+        private volatile bool m_backingup = false;
 
         public string m_simulatorVersion = "OpenSimulator 0.5";