diff --git a/LuaLibs/FacesBySaw.lua b/LuaLibs/FacesBySaw.lua
index 2aa124b..20c0798 100644
--- a/LuaLibs/FacesBySaw.lua
+++ b/LuaLibs/FacesBySaw.lua
@@ -643,7 +643,7 @@ function FacesBySaw.MakeTwo( Proc, nPhase, nRawId, nPartId, dOvmHead, sCutType,
    local bFaceOk = {}
    bFaceOk[1] = ( vtN[1]:getZ() >= ( BD.CUT_VZ_MIN or BD.NZ_MINB) or abs( vtN[1]:getY()) < 0.174 or ( Proc.AffectedFaces.Left ~= Proc.AffectedFaces.Right and Proc.Face[1].Elevation < dMaxDepth - 10 * GEO.EPS_SMALL))
    bFaceOk[2] = ( vtN[2]:getZ() >= ( BD.CUT_VZ_MIN or BD.NZ_MINB) or abs( vtN[2]:getY()) < 0.174 or ( Proc.AffectedFaces.Left ~= Proc.AffectedFaces.Right and Proc.Face[2].Elevation < dMaxDepth - 10 * GEO.EPS_SMALL))
-   if not bDownHead and ( not bFaceOk[1] or not bFaceOk[2]) then
+   if not bDownHead and not bFaceOk[1] and not bFaceOk[2] then
       local sErr = 'Error : TwoFacesBySaw from bottom impossible'
       EgtOutLog( sErr)
       return false, sErr
diff --git a/LuaLibs/ProcessLapJoint.lua b/LuaLibs/ProcessLapJoint.lua
index dbc2862..21a0015 100644
--- a/LuaLibs/ProcessLapJoint.lua
+++ b/LuaLibs/ProcessLapJoint.lua
@@ -7088,11 +7088,9 @@ local function TestTwoFacesDownHead( Proc)
       if not ( Proc.Face[1].IsTooDownwardForTopBlade or Proc.Face[2].IsTooDownwardForTopBlade) then
          bDownHeadBlade = false
       else
-         for i = 1, Proc.Fct do
-            if Proc.Face[i].IsTooDownwardForTopBlade and ( not Proc.IsTopDownRabbet or Proc.Face[i].IsTooWideForTopBlade) then
-               bDownHeadBlade = true
-               break
-            end
+         if ( Proc.Face[1].IsTooDownwardForTopBlade and Proc.Face[2].IsTooWideForTopBlade) or
+            ( Proc.Face[2].IsTooDownwardForTopBlade and Proc.Face[1].IsTooWideForTopBlade) then
+            bDownHeadBlade = true
          end
       end
    end