diff --git a/physics/SFC_Models/Land/Noahmp/module_sf_noahmplsm.F90 b/physics/SFC_Models/Land/Noahmp/module_sf_noahmplsm.F90
index 3451f807e..67426a319 100644
--- a/physics/SFC_Models/Land/Noahmp/module_sf_noahmplsm.F90
+++ b/physics/SFC_Models/Land/Noahmp/module_sf_noahmplsm.F90
@@ -2626,9 +2626,9 @@ subroutine csnow (parameters,isnow   ,nsnow   ,nsoil   ,snice   ,snliq   ,dzsnso
 ! thermal conductivity of snow
 
   do iz = isnow+1, 0
-     tksno(iz) = 3.2217e-6*bdsnoi(iz)**2.           ! stieglitz(yen,1965)
+!    tksno(iz) = 3.2217e-6*bdsnoi(iz)**2.           ! stieglitz(yen,1965)
 !    tksno(iz) = 2e-2+2.5e-6*bdsnoi(iz)*bdsnoi(iz)   ! anderson, 1976
-!    tksno(iz) = 0.35                                ! constant
+     tksno(iz) = 0.35                                ! constant
 !   tksno(iz) = 2.576e-6*bdsnoi(iz)**2. + 0.074    ! verseghy (1991)
 !    tksno(iz) = 2.22*(bdsnoi(iz)/1000.)**1.88      ! douvill(yen, 1981)
   enddo