diff --git a/LuaLibs/WallExec.lua b/LuaLibs/WallExec.lua
index 070a0e7..f86077e 100644
--- a/LuaLibs/WallExec.lua
+++ b/LuaLibs/WallExec.lua
@@ -216,8 +216,10 @@ function WallExec.CollectFeatures( PartId, b3Raw)
                   Proc.DistanceToRawPart = WL.GetProcessDistanceToRawPart( Proc, b3Raw)
                   -- recupero informazioni sulle facce della feature
                   Proc.Face = {}
-                  for i = 1, Proc.Fct do
-                     Proc.Face[i] = { Id = i - 1, VtN = EgtSurfTmFacetNormVersor( Proc.Id, i - 1, GDB_ID.ROOT ), Elevation = WL.GetFaceElevation( Proc.Id, i - 1, PartId)}
+                  if Proc.Fct < 50 then
+                     for i = 1, Proc.Fct do
+                        Proc.Face[i] = { Id = i - 1, VtN = EgtSurfTmFacetNormVersor( Proc.Id, i - 1, GDB_ID.ROOT ), Elevation = WL.GetFaceElevation( Proc.Id, i - 1, PartId)}
+                     end
                   end
                end
                if Proc.Box and not Proc.Box:isEmpty() then