diff --git a/LuaLibs/PreSimulationLib.lua b/LuaLibs/PreSimulationLib.lua
index ae97163..869ba1f 100644
--- a/LuaLibs/PreSimulationLib.lua
+++ b/LuaLibs/PreSimulationLib.lua
@@ -124,14 +124,11 @@ local function GetCollisionPointsToCheck( Edge, dDepthToMachine)
       or AreSameOrOppositeVectorApprox( Edge.vtEdge, Z_AX())
 
    -- aggiunta punti
-   -- inizio e fine solo se lato obliquo
+   table.insert( PointsToCheck, ptStart)
    if not bIsEdgeParallelToMainDirection then
-      table.insert( PointsToCheck, ptStart)
-   end
-   table.insert( PointsToCheck, ptMid)
-   if not bIsEdgeParallelToMainDirection then
-      table.insert( PointsToCheck, ptEnd)
+      table.insert( PointsToCheck, ptMid)
    end
+   table.insert( PointsToCheck, ptEnd)
 
    return PointsToCheck
 end