diff --git a/LuaLibs/ProcessDtMortise.lua b/LuaLibs/ProcessDtMortise.lua
index bf3ee34..e60a7e9 100644
--- a/LuaLibs/ProcessDtMortise.lua
+++ b/LuaLibs/ProcessDtMortise.lua
@@ -1,4 +1,4 @@
--- ProcessDtMortise.lua by Egaltech s.r.l. 2020/10/18
+-- ProcessDtMortise.lua by Egaltech s.r.l. 2020/10/21
 -- Gestione calcolo mortase a coda di rondine per Travi
 
 -- Tabella per definizione modulo
@@ -186,7 +186,7 @@ function ProcessDtMortise.Make( Proc, nPhase, nRawId, nPartId, dCurrOvmH)
    local nSt, nEnd = EgtCurveDomain( AuxId)
    for i = nSt, nEnd - 1 do
       local dRad = EgtCurveCompoRadius( AuxId, i)
-      if dRad > 0 and dRad < dToolDiam / 2 then
+      if dRad > 0 and dRad < dToolDiam / 2 - GEO.EPS_ZERO then
          local sErr = 'Radius too small : Error on DtMortise ' .. tostring( Proc.Id)
          EgtOutLog( sErr)
          return false, sErr