diff --git a/OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs b/OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs
index 8ae24569db..53d1209c24 100644
--- a/OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs
+++ b/OpenSim/Region/ScriptEngine/Common/LSL_BuiltIn_Commands.cs
@@ -3355,7 +3355,15 @@ namespace OpenSim.Region.ScriptEngine.Common
         public LSL_Types.LSLInteger llGetListLength(LSL_Types.list src)
         {
             m_host.AddScriptLPS(1);
-            return src.Length;
+
+            if (src == null)
+            {
+                return 0;
+            }
+            else
+            {
+                return src.Length;
+            }
         }
 
         public LSL_Types.LSLInteger llList2Integer(LSL_Types.list src, int index)
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 3fbe257afc..8edd1692ce 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -3299,7 +3299,15 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         public LSL_Types.LSLInteger llGetListLength(LSL_Types.list src)
         {
             m_host.AddScriptLPS(1);
-            return src.Length;
+
+            if (src == null)
+            {
+                return 0;
+            }
+            else
+            {
+                return src.Length;
+            }
         }
 
         public LSL_Types.LSLInteger llList2Integer(LSL_Types.list src, int index)