diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
index da1ef91e88..bb498b500b 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
@@ -635,6 +635,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         public static readonly LSLInteger RC_GET_ROOT_KEY = 2;
         public static readonly LSLInteger RC_GET_LINK_NUM = 4;
 
+        public static readonly LSLInteger RCERR_UNKNOWN = -1;        
+        public static readonly LSLInteger RCERR_SIM_PERF_LOW = -2;
         public static readonly LSLInteger RCERR_CAST_TIME_EXCEEDED = 3;
     }
 }