diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 4acfc762cf..6b3571684b 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -2139,7 +2139,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             }
             else
             {
-                return String.Empty;
+                return UUID.Zero.ToString();
             }
         }