diff --git a/tsg_util/read_file_woa01.m b/tsg_util/read_file_woa01.m
index 8fd49cdb06d9a4869acb53db55135edb9d7accd5..aeaa694e9ad09650cd39169957e178fb1a49393c 100644
--- a/tsg_util/read_file_woa01.m
+++ b/tsg_util/read_file_woa01.m
@@ -1,14 +1,15 @@
 function levitus = read_file_woa01(file)
 % a mettre dans la classe de base oceano puisque commun a tous
-% read_woa01.m
 %
 % read WOA01 Levitus T-S-O2, Stddev & nb_obs Netcdf file in memory
 
-% $Id: read_file_woa01.m 123 2007-02-12 08:35:45Z jgrelet $
+% $Id$
 
 filesfound = checkforfiles( file );
 if filesfound == 0; 
-   error(['Couldn''t find ', file])
+   warning(['Couldn''t find ', file]);
+   levitus = -1;
+   return;
 end
 
 % a commenter en production