diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 525c3c30fd..c5392b590a 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -7069,10 +7069,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             shapeBlock.PathScaleX = 100;
             shapeBlock.PathScaleY = 150;
 
-            if (type != (int)ScriptBaseClass.PRIM_SCULPT_TYPE_CYLINDER &&
-                type != (int)ScriptBaseClass.PRIM_SCULPT_TYPE_PLANE &&
-                type != (int)ScriptBaseClass.PRIM_SCULPT_TYPE_SPHERE &&
-                type != (int)ScriptBaseClass.PRIM_SCULPT_TYPE_TORUS)
+            int flag = type & (ScriptBaseClass.PRIM_SCULPT_FLAG_INVERT | ScriptBaseClass.PRIM_SCULPT_FLAG_MIRROR);
+
+            if (type != (ScriptBaseClass.PRIM_SCULPT_TYPE_CYLINDER | flag) &&
+                type != (ScriptBaseClass.PRIM_SCULPT_TYPE_PLANE | flag) &&
+                type != (ScriptBaseClass.PRIM_SCULPT_TYPE_SPHERE | flag) &&
+                type != (ScriptBaseClass.PRIM_SCULPT_TYPE_TORUS | flag))
             {
                 // default
                 type = (int)ScriptBaseClass.PRIM_SCULPT_TYPE_SPHERE;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
index bb498b500b..5a53e15882 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
@@ -378,6 +378,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         public const int PRIM_SCULPT_TYPE_TORUS = 2;
         public const int PRIM_SCULPT_TYPE_PLANE = 3;
         public const int PRIM_SCULPT_TYPE_CYLINDER = 4;
+        public const int PRIM_SCULPT_FLAG_INVERT = 64;
+        public const int PRIM_SCULPT_FLAG_MIRROR = 128;
 
         public const int MASK_BASE = 0;
         public const int MASK_OWNER = 1;