1 files changed, 1 insertions, 1 deletions

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index d5e611c..f9b4bfd 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -3420,7 +3420,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         public void llInstantMessage(string user, string message)
         {
             UUID result;
-            if (!UUID.TryParse(user, out result))
+            if (!UUID.TryParse(user, out result) || result == UUID.Zero)
             {
                 ShoutError("An invalid key  was passed to llInstantMessage");
                 ScriptSleep(2000);