diff --git a/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs b/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs
index 03081697d9..deb995be68 100644
--- a/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs
+++ b/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs
@@ -240,7 +240,7 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
                 }
             }
 
-            if (engine != "DotNetEngine")
+            if (engine != myScriptEngine.ScriptEngineName)
                 return;
 
             myScriptEngine.Log.Debug("OnRezScript localID: " + localID + " LLUID: " + itemID.ToString() + " Size: " +
diff --git a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
index f11ccc4a70..3a06462b59 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
@@ -359,7 +359,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                 }
             }
 
-            if (engine != "XEngine")
+            if (engine != ScriptEngineName)
                 return;
 
             Object[] parms = new Object[]{localID, itemID, script, startParam, postOnRez};
diff --git a/prebuild.xml b/prebuild.xml
index c8fe1e49dc..78b69138b3 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -1996,6 +1996,7 @@
       <Reference name="OpenSim.Framework"/>
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Region.Environment" />
+      <Reference name="OpenSim.Region.Interfaces" />
       <Reference name="OpenSim.Region.ScriptEngine.Common"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared.Api"/>