diff --git a/cice/source/ice_dyn_eap.F90 b/cice/source/ice_dyn_eap.F90
index 63eeaae..e124e0c 100644
--- a/cice/source/ice_dyn_eap.F90
+++ b/cice/source/ice_dyn_eap.F90
@@ -141,7 +141,8 @@ subroutine eap (dt)
          strtmp       ! stress combinations for momentum equation
 
       integer (kind=int_kind), dimension (nx_block,ny_block,max_blocks) :: &
-         icetmask   ! ice extent mask (T-cell)
+         icetmask, &  ! ice extent mask (T-cell)
+         halomask     ! ice mask for halo update
 
       type (ice_halo) :: &
          halo_info_mask !  ghost cell update info for masked halo
@@ -320,6 +321,7 @@ subroutine eap (dt)
       ! velocities may have changed in evp_prep2
       call ice_HaloUpdate (fld2,               halo_info, &
                            field_loc_NEcorner, field_type_vector)
+      call ice_timer_stop(timer_bound)
 
       ! unload
       !$OMP PARALLEL DO PRIVATE(iblk)
@@ -329,9 +331,15 @@ subroutine eap (dt)
       enddo
       !$OMP END PARALLEL DO
 
-      if (maskhalo_dyn) &
-         call ice_HaloMask(halo_info_mask, halo_info, icetmask)
-      call ice_timer_stop(timer_bound)
+      if (maskhalo_dyn) then
+         call ice_timer_start(timer_bound)
+         halomask = 0
+         where (iceumask) halomask = 1
+         call ice_HaloUpdate (halomask,          halo_info, &
+                              field_loc_center,  field_type_scalar)
+         call ice_timer_stop(timer_bound)
+         call ice_HaloMask(halo_info_mask, halo_info, halomask)
+      endif
 
       do ksub = 1,ndte        ! subcycling
 
@@ -433,6 +441,7 @@ subroutine eap (dt)
             call ice_HaloUpdate (fld2,               halo_info, &
                                  field_loc_NEcorner, field_type_vector)
          endif
+         call ice_timer_stop(timer_bound)
 
          ! unload
          !$OMP PARALLEL DO PRIVATE(iblk)
@@ -441,7 +450,6 @@ subroutine eap (dt)
             vvel(:,:,iblk) = fld2(:,:,2,iblk)
          enddo
          !$OMP END PARALLEL DO
-         call ice_timer_stop(timer_bound)
 
       enddo                     ! subcycling
 
diff --git a/cice/source/ice_dyn_evp.F90 b/cice/source/ice_dyn_evp.F90
index 6dfd0df..df3d4d1 100644
--- a/cice/source/ice_dyn_evp.F90
+++ b/cice/source/ice_dyn_evp.F90
@@ -292,6 +292,7 @@ subroutine evp (dt)
       ! velocities may have changed in evp_prep2
       call ice_HaloUpdate (fld2,               halo_info, &
                            field_loc_NEcorner, field_type_vector)
+      call ice_timer_stop(timer_bound)
 
       ! unload
       !$OMP PARALLEL DO PRIVATE(iblk)
@@ -301,9 +302,15 @@ subroutine evp (dt)
       enddo
       !$OMP END PARALLEL DO
 
-      if (maskhalo_dyn) &
-         call ice_HaloMask(halo_info_mask, halo_info, icetmask)
-      call ice_timer_stop(timer_bound)
+      if (maskhalo_dyn) then
+         call ice_timer_start(timer_bound)
+         halomask = 0
+         where (iceumask) halomask = 1
+         call ice_HaloUpdate (halomask,          halo_info, &
+                              field_loc_center,  field_type_scalar)
+         call ice_timer_stop(timer_bound)
+         call ice_HaloMask(halo_info_mask, halo_info, halomask)
+      endif
 
       do ksub = 1,ndte        ! subcycling
 
@@ -369,6 +376,7 @@ subroutine evp (dt)
             call ice_HaloUpdate (fld2,               halo_info, &
                                  field_loc_NEcorner, field_type_vector)
          endif
+         call ice_timer_stop(timer_bound)
 
          ! unload
          !$OMP PARALLEL DO PRIVATE(iblk)
@@ -377,7 +385,6 @@ subroutine evp (dt)
             vvel(:,:,iblk) = fld2(:,:,2,iblk)
          enddo
          !$OMP END PARALLEL DO
-         call ice_timer_stop(timer_bound)
 
       enddo                     ! subcycling