diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index a4e2504..524f1b7 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -5288,7 +5288,7 @@ function SawPlusChain.Saw.CalculateMachiningParameters( Proc, FaceToMachine, Edg
          EgtOutLog( Cutting.Message)
       end
    end
-   if EdgeToMachine.ToolDirection:getZ() < BD.NZ_MINA and BD.DOWN_HEAD then
+   if EdgeToMachine.ToolDirection:getZ() < BD.NZ_MINA and BD.C_SIMM then
       Cutting.CanApply = false
       Cutting.Message = 'Feature '.. Proc.FeatureId .. ' : skipped sawblade from bottom'
       EgtOutLog( Cutting.Message)