diff --git a/ccpp/driver/GFS_diagnostics.F90 b/ccpp/driver/GFS_diagnostics.F90
index d2a8bdf5a..41eae554f 100644
--- a/ccpp/driver/GFS_diagnostics.F90
+++ b/ccpp/driver/GFS_diagnostics.F90
@@ -1411,7 +1411,7 @@ subroutine GFS_externaldiag_populate (ExtDiag, Model, Statein, Stateout, Sfcprop
     ExtDiag(idx)%axes = 2
     ExtDiag(idx)%name = 'pevpr_ave'
     ExtDiag(idx)%desc = 'averaged potential evaporation rate'
-    ExtDiag(idx)%unit = 'W/m**2'
+    ExtDiag(idx)%unit = 'mm/s'
     ExtDiag(idx)%mod_name = 'gfs_phys'
     ExtDiag(idx)%time_avg = .TRUE.
     allocate (ExtDiag(idx)%data(nblks))
@@ -2225,7 +2225,7 @@ subroutine GFS_externaldiag_populate (ExtDiag, Model, Statein, Stateout, Sfcprop
     ExtDiag(idx)%axes = 2
     ExtDiag(idx)%name = 'pevpr'
     ExtDiag(idx)%desc = 'instantaneous surface potential evaporation'
-    ExtDiag(idx)%unit = 'W/m**2'
+    ExtDiag(idx)%unit = 'mm/s'
     ExtDiag(idx)%mod_name = 'gfs_phys'
     allocate (ExtDiag(idx)%data(nblks))
     do nb = 1,nblks
diff --git a/ccpp/physics b/ccpp/physics
index 50a7846db..db19a6d1d 160000
--- a/ccpp/physics
+++ b/ccpp/physics
@@ -1 +1 @@
-Subproject commit 50a7846db918ec01fb001afb6a9dd8c76d5c0070
+Subproject commit db19a6d1d7fa7ed56f62318501c4abb5fb8b1138