diff --git a/OpenSim/Data/MySQL/MySQLSimulationData.cs b/OpenSim/Data/MySQL/MySQLSimulationData.cs
index 9cc6f400e1..2d20eaf69c 100644
--- a/OpenSim/Data/MySQL/MySQLSimulationData.cs
+++ b/OpenSim/Data/MySQL/MySQLSimulationData.cs
@@ -52,7 +52,7 @@ namespace OpenSim.Data.MySQL
         private string m_connectionString;
         private object m_dbLock = new object();
 
-        protected Assembly Assembly
+        protected virtual Assembly Assembly
         {
             get { return GetType().Assembly; }
         }