diff --git a/srcF/sfx_surface.f90 b/srcF/sfx_surface.f90
index 3b23599957ccde58944eecec599bd6edc60fc598..ce7e01f8981c86d34ed7caa46d0570820fc505e7 100644
--- a/srcF/sfx_surface.f90
+++ b/srcF/sfx_surface.f90
@@ -99,10 +99,10 @@ module sfx_surface
     integer, public, parameter :: ocean_z0m_id = z0m_ch     !< ocean surface
     integer, public, parameter :: land_z0m_id = z0m_map_id        !< land surface
     integer, public, parameter :: lake_z0m_id = z0m_map_id        !< lake surface
-    integer, public, parameter :: snow_z0m_id = z0m_map_id       !< snow covered surface    
+    integer, public, parameter :: snow_z0m_id = z0m_ow       !< snow covered surface    
     integer, public, parameter :: forest_z0m_id = z0m_map_id     !< forest csurface  
     integer, public, parameter :: usersf_z0m_id = z0m_map_id      !< user surface  
-    integer, public, parameter :: ice_z0m_id = z0m_map_id       !< ice surface  
+    integer, public, parameter :: ice_z0m_id = z0m_ow       !< ice surface  
 
 
     integer, public, parameter :: ocean_z0t_id = z0t_kl_water     !< ocean surface