diff --git a/OpenSim/Data/MySQL/MySQLLogData.cs b/OpenSim/Data/MySQL/MySQLLogData.cs
index 2e6de7c5c2..2ca5bb212b 100644
--- a/OpenSim/Data/MySQL/MySQLLogData.cs
+++ b/OpenSim/Data/MySQL/MySQLLogData.cs
@@ -26,6 +26,7 @@
  */
 using System;
 using System.Reflection;
+using System.Collections.Generic;
 using log4net;
 
 namespace OpenSim.Data.MySQL