diff --git a/odoo/service/server.py b/odoo/service/server.py
index 5612af5bf52..961199b7c62 100644
--- a/odoo/service/server.py
+++ b/odoo/service/server.py
@@ -1220,7 +1220,7 @@ def load_test_file_py(registry, test_file):
     threading.currentThread().testing = True
     try:
         test_path, _ = os.path.splitext(os.path.abspath(test_file))
-        for mod in [m for m in get_modules() if '/%s/' % m in test_file]:
+        for mod in [m for m in get_modules() if '%s%s%s' % (os.path.sep, m, os.path.sep) in test_file]:
             for mod_mod in loader.get_test_modules(mod):
                 mod_path, _ = os.path.splitext(getattr(mod_mod, '__file__', ''))
                 if test_path == config._normalize(mod_path):
diff --git a/odoo/tools/config.py b/odoo/tools/config.py
index e2f4ebd195e..7c320372158 100644
--- a/odoo/tools/config.py
+++ b/odoo/tools/config.py
@@ -10,7 +10,7 @@ import sys
 import tempfile
 import warnings
 import odoo
-from os.path import expandvars, expanduser, abspath, realpath
+from os.path import expandvars, expanduser, abspath, realpath, normcase
 from .. import release, conf, loglevels
 from . import appdirs
 
@@ -737,7 +737,7 @@ class configmanager(object):
     def _normalize(self, path):
         if not path:
             return ''
-        return realpath(abspath(expanduser(expandvars(path.strip()))))
+        return normcase(realpath(abspath(expanduser(expandvars(path.strip())))))
 
 
 config = configmanager()