diff --git a/src/MNH/read_field.f90 b/src/MNH/read_field.f90
index 1488327fe0928654d088a67d3c2392a5b803da95..860010bdecc6380a911508f5fda42b59cf95bedc 100644
--- a/src/MNH/read_field.f90
+++ b/src/MNH/read_field.f90
@@ -671,7 +671,7 @@ TZFIELD = TFIELDMETADATA(   &
   CUNITS     = '',          &
   CDIR       = '--',        &
   CCOMMENT   = '',          &
-  NGRID      = 1,           &
+  NGRID      = 0,           &
   NTYPE      = TYPELOG,     &
   NDIMS      = 0,           &
   LTIMEDEP   = .FALSE.      )
@@ -1474,7 +1474,7 @@ IF ( LFORCING ) THEN
       CUNITS     = 'Pa',                      &
       CDIR       = '--',                      &
       CCOMMENT   = 'Forcing ground pressure', &
-      NGRID      = 1,                         &
+      NGRID      = 0,                         &
       NTYPE      = TYPEREAL,                  &
       NDIMS      = 0,                         &
       LTIMEDEP   = .FALSE.                    )
diff --git a/src/MNH/write_lfifm1_for_diag.f90 b/src/MNH/write_lfifm1_for_diag.f90
index a6099e6a0f4eb779347699adbcf1e6f85fc896ca..0347435aeb1246f4e13efdd3f88cffeb667d3b8b 100644
--- a/src/MNH/write_lfifm1_for_diag.f90
+++ b/src/MNH/write_lfifm1_for_diag.f90
@@ -2169,7 +2169,7 @@ IF (LVAR_FRC .AND. LFORCING) THEN
       CUNITS     = 'Pa',                      &
       CDIR       = '--',                      &
       CCOMMENT   = 'Forcing ground pressure', &
-      NGRID      = 1,                         &
+      NGRID      = 0,                         &
       NTYPE      = TYPEREAL,                  &
       NDIMS      = 0,                         &
       LTIMEDEP   = .FALSE.                    )
diff --git a/src/MNH/write_lfin.f90 b/src/MNH/write_lfin.f90
index 0eb4fca4991126b2d02d53a2aa10e81df2e0167b..2da738140919a0322a2450cf195be528ba028b77 100644
--- a/src/MNH/write_lfin.f90
+++ b/src/MNH/write_lfin.f90
@@ -424,7 +424,7 @@ TZFIELD = TFIELDMETADATA(   &
   CUNITS     = '',          &
   CDIR       = '--',        &
   CCOMMENT   = '',          &
-  NGRID      = 1,           &
+  NGRID      = 0,           &
   NTYPE      = TYPELOG,     &
   NDIMS      = 0,           &
   LTIMEDEP   = .FALSE.      )
@@ -1725,7 +1725,7 @@ IF (LFORCING) THEN
       CUNITS     = 'Pa',                      &
       CDIR       = '--',                      &
       CCOMMENT   = 'Forcing ground pressure', &
-      NGRID      = 1,                         &
+      NGRID      = 0,                         &
       NTYPE      = TYPEREAL,                  &
       NDIMS      = 0,                         &
       LTIMEDEP   = .FALSE.                    )