diff --git a/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs b/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
index 29dbe42aea..0bd377c1a8 100755
--- a/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
+++ b/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
@@ -982,7 +982,7 @@ namespace OpenSim.Region.CoreModules.Asset
 
             double weakHitRate = m_weakRefHits * invReq;
             int weakEntriesAlive = 0;
-            lock(weakAssetReferences)
+            lock(weakAssetReferencesLock)
             {
                 foreach(WeakReference aref in weakAssetReferences.Values)
                 {