diff --git a/openerp/service/db.py b/openerp/service/db.py
index 0dbc50e2747..485a35c4abd 100644
--- a/openerp/service/db.py
+++ b/openerp/service/db.py
@@ -195,10 +195,10 @@ def dump_db(db_name, stream, backup_format='zip'):
             cmd.insert(-1, '--file=' + os.path.join(dump_dir, 'dump.sql'))
             openerp.tools.exec_pg_command(*cmd)
             if stream:
-                openerp.tools.osutil.zip_dir(dump_dir, stream, include_dir=False)
+                openerp.tools.osutil.zip_dir(dump_dir, stream, include_dir=False, fnct_sort=lambda file_name: file_name != 'dump.sql')
             else:
                 t=tempfile.TemporaryFile()
-                openerp.tools.osutil.zip_dir(dump_dir, t, include_dir=False)
+                openerp.tools.osutil.zip_dir(dump_dir, t, include_dir=False, fnct_sort=lambda file_name: file_name != 'dump.sql')
                 t.seek(0)
                 return t
     else:
diff --git a/openerp/tools/osutil.py b/openerp/tools/osutil.py
index afe3fc459f3..a71b6ccbd54 100644
--- a/openerp/tools/osutil.py
+++ b/openerp/tools/osutil.py
@@ -73,7 +73,12 @@ def tempdir():
     finally:
         shutil.rmtree(tmpdir)
 
-def zip_dir(path, stream, include_dir=True):      # TODO add ignore list
+def zip_dir(path, stream, include_dir=True, fnct_sort=None):      # TODO add ignore list
+    """
+    : param fnct_sort : Function to be passed to "key" parameter of built-in
+                        python sorted() to provide flexibility of sorting files
+                        inside ZIP archive according to specific requirements.
+    """
     path = os.path.normpath(path)
     len_prefix = len(os.path.dirname(path)) if include_dir else len(path)
     if len_prefix:
@@ -81,6 +86,7 @@ def zip_dir(path, stream, include_dir=True):      # TODO add ignore list
 
     with zipfile.ZipFile(stream, 'w', compression=zipfile.ZIP_DEFLATED, allowZip64=True) as zipf:
         for dirpath, dirnames, filenames in os.walk(path):
+            filenames = sorted(filenames, key=fnct_sort)
             for fname in filenames:
                 bname, ext = os.path.splitext(fname)
                 ext = ext or bname