diff --git a/src/LIB/SURCOUCHE/src/mode_io_write_nc4.f90 b/src/LIB/SURCOUCHE/src/mode_io_write_nc4.f90
index 43a779e3ee8a47960647e8e27c44378fd19f0052..54c01012fbb4a73815e5fdc76d4ba3736fb779ba 100644
--- a/src/LIB/SURCOUCHE/src/mode_io_write_nc4.f90
+++ b/src/LIB/SURCOUCHE/src/mode_io_write_nc4.f90
@@ -2339,7 +2339,7 @@ IF (TRIM(TPFILE%CFORMAT)/='NETCDF4' .AND. TRIM(TPFILE%CFORMAT)/='LFICDF4') RETUR
 CALL PRINT_MSG(NVERB_DEBUG,'IO','IO_Header_write_nc4','called for file '//TRIM(TPFILE%CNAME))
 !
 IF (TPFILE%LMASTER)  THEN
-  ISTATUS = NF90_PUT_ATT(TPFILE%NNCID, NF90_GLOBAL, 'Conventions', 'CF-1.7 COMODO-1.4')
+  ISTATUS = NF90_PUT_ATT(TPFILE%NNCID, NF90_GLOBAL, 'Conventions', 'CF-1.10 COMODO-1.4')
   IF (ISTATUS /= NF90_NOERR) CALL IO_Err_handle_nc4(istatus,'IO_FILE_WRITE_HEADER','NF90_PUT_ATT','Conventions')
 
 #if (MNH_REAL == 8)