diff --git a/src/MNH/modd_parameters.f90 b/src/MNH/modd_parameters.f90
index c21c6e70955e1e1ecbe501225f6d3f83dd66a1ec..5ac0994cac9ea44352553c7cadf727bc0f4dde56 100644
--- a/src/MNH/modd_parameters.f90
+++ b/src/MNH/modd_parameters.f90
@@ -1,4 +1,4 @@
-!MNH_LIC Copyright 1994-2020 CNRS, Meteo-France and Universite Paul Sabatier
+!MNH_LIC Copyright 1994-2022 CNRS, Meteo-France and Universite Paul Sabatier
 !MNH_LIC This is part of the Meso-NH software governed by the CeCILL-C licence
 !MNH_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !MNH_LIC for details. version 1.
@@ -53,6 +53,7 @@ IMPLICIT NONE
 !JUAN CYCLK
 !INTEGER, PARAMETER :: JPHEXT = 3     ! Horizontal External points number
 INTEGER,SAVE      :: JPHEXT = 1     ! Horizontal External points number
+!$acc declare copyin( JPHEXT )
 !
 !JUAN CYCLK
 INTEGER, PARAMETER :: JPVEXT = 1      ! Vertical External points number
diff --git a/src/MNH/read_desfmn.f90 b/src/MNH/read_desfmn.f90
index 2f781f8e7c208bd4bbc9d2bdc0461fa767033a95..e433fd43338fb5a08df554247b868a6d9cf7b8e2 100644
--- a/src/MNH/read_desfmn.f90
+++ b/src/MNH/read_desfmn.f90
@@ -1,4 +1,4 @@
-!MNH_LIC Copyright 1994-2021 CNRS, Meteo-France and Universite Paul Sabatier
+!MNH_LIC Copyright 1994-2022 CNRS, Meteo-France and Universite Paul Sabatier
 !MNH_LIC This is part of the Meso-NH software governed by the CeCILL-C licence
 !MNH_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !MNH_LIC for details. version 1.
@@ -482,6 +482,7 @@ END IF
 IF (KMI == 1) THEN
   CALL POSNAM(ILUDES,'NAM_CONF',GFOUND)
   IF (GFOUND) READ(UNIT=ILUDES,NML=NAM_CONF)
+!$acc update device( JPHEXT )
   CALL POSNAM(ILUDES,'NAM_DYN',GFOUND)
   IF (GFOUND) READ(UNIT=ILUDES,NML=NAM_DYN)
   CALL POSNAM(ILUDES,'NAM_NESTING',GFOUND)
diff --git a/src/MNH/read_exsegn.f90 b/src/MNH/read_exsegn.f90
index 9db15fc163ad08c775913431fff5c97226d3839e..1172ca4db397feb564b42467eca30b5bae5a9213 100644
--- a/src/MNH/read_exsegn.f90
+++ b/src/MNH/read_exsegn.f90
@@ -1,4 +1,4 @@
-!MNH_LIC Copyright 1994-2021 CNRS, Meteo-France and Universite Paul Sabatier
+!MNH_LIC Copyright 1994-2022 CNRS, Meteo-France and Universite Paul Sabatier
 !MNH_LIC This is part of the Meso-NH software governed by the CeCILL-C licence
 !MNH_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt
 !MNH_LIC for details. version 1.
@@ -560,6 +560,7 @@ IF (KMI == 1) THEN
   WRITE(UNIT=ILUOUT,FMT="(' namelists common to all the models ')")
   CALL POSNAM(ILUSEG,'NAM_CONF',GFOUND,ILUOUT)
   IF (GFOUND) READ(UNIT=ILUSEG,NML=NAM_CONF)
+!$acc update device( JPHEXT )
   CALL POSNAM(ILUSEG,'NAM_CONFZ',GFOUND,ILUOUT)
   IF (GFOUND) READ(UNIT=ILUSEG,NML=NAM_CONFZ)
   CALL POSNAM(ILUSEG,'NAM_DYN',GFOUND,ILUOUT)