diff --git a/LuaLibs/CalcToolPath.lua b/LuaLibs/CalcToolPath.lua
index 52ae064..76eb9a2 100644
--- a/LuaLibs/CalcToolPath.lua
+++ b/LuaLibs/CalcToolPath.lua
@@ -643,7 +643,7 @@ local function AddRibsLeadOut( nCrv, nTPathGrp, nLoopsGrp, vtSlicing, dStrand, n
    -- recupero la curva di offset su cui calcolare lead out
    local nCrvOffs = EgtGetFirstInGroup( nLoopsGrp)
    while nCrvOffs do
-      local dParE = EgtCurveParamAtPoint( nCrvOffs, ptE, GDB_RT.GLOB)
+      local dParE = EgtCurveParamAtPoint( nCrvOffs, ptE, GEO.EPS_SMALL, GDB_RT.GLOB)
       if dParE then
          
          local nCrvLO