diff --git a/src/MNH/open_prc_files.f90 b/src/MNH/open_prc_files.f90
index 480581e46b54d02269f7a8d5eaab1055a3419215..7a615a6525936c04598684d65b139da83329a62c 100644
--- a/src/MNH/open_prc_files.f90
+++ b/src/MNH/open_prc_files.f90
@@ -177,6 +177,8 @@ HSURFFILETYPE='MESONH'
 HCAMSFILE=''
 HCAMSFILETYPE='NETCDF'
 !
+TPATMFILE => NULL()
+!
 !-------------------------------------------------------------------------------
 !
 !*       2.    OPENNING OF THE OUTPUT LISTING FILE