diff --git a/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs b/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
index 1ea52c5c4e..326f3275a8 100644
--- a/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
@@ -257,12 +257,17 @@ namespace OpenSim.Region.ScriptEngine.Shared
             public static double Mag(Vector3 v)
             {
                 return Math.Sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
-            }
-
-            public static Vector3 Norm(Vector3 vector)
-            {
-                double mag = Mag(vector);
-                return new Vector3(vector.x / mag, vector.y / mag, vector.z / mag);
+            }
+
+            public static Vector3 Norm(Vector3 vector)
+            {
+                double mag = Mag(vector);
+                if (mag > 0.0)
+                {
+                    double invMag = 1.0 / mag;
+                    return vector * invMag;
+                }
+                return new Vector3(0, 0, 0);
             }
 
             #endregion