diff --git a/LuaLibs/ProcessMortise.lua b/LuaLibs/ProcessMortise.lua
index 67e2854..1b8a87d 100644
--- a/LuaLibs/ProcessMortise.lua
+++ b/LuaLibs/ProcessMortise.lua
@@ -340,8 +340,10 @@ function ProcessMortise.Make( Proc, nPhase, nRawId, nPartId, dCurrOvmH)
          -- se il percorso ausiliario è esterno al grezzo, lo riavvicino
          if abs( dMove) > GEO.EPS_SMALL then
             AuxId = EgtCopyGlob( AuxId, BL.GetAddGroup( nPartId))
-            EgtMove( AuxId, Vector3d(0,0,-dMove))
-            EgtMove( nFlat, Vector3d(0,0,-dMove))
+            local vtMove = Vector3d(0,0,dMove)
+            vtMove:toGlob(frMor)
+            EgtMove( AuxId, vtMove, GDB_RT.GLOB)
+            EgtMove( nFlat, vtMove, GDB_RT.GLOB)
             frMor, dL, dW = EgtSurfTmFacetMinAreaRectangle( nFlat, 0, GDB_ID.ROOT)
             ptC = frMor:getOrigin()
             vtN = frMor:getVersZ()