diff --git a/ccpp/physics_namelists/input_GFS_v16.nml b/ccpp/physics_namelists/input_GFS_v16.nml
index 35e266565..b601e98c9 100644
--- a/ccpp/physics_namelists/input_GFS_v16.nml
+++ b/ccpp/physics_namelists/input_GFS_v16.nml
@@ -40,7 +40,7 @@
     iopt_snf = 4
     iopt_stc = 1
     iopt_tbot = 2
-    iovr = 4
+    iovr = 3
     isatmedmf = 1
     isol = 2
     isot = 1