diff --git a/openerpcommand/run_tests.py b/openerpcommand/run_tests.py
index dda0f5946fd..a3aa39a05ca 100644
--- a/openerpcommand/run_tests.py
+++ b/openerpcommand/run_tests.py
@@ -106,12 +106,14 @@ def run(args):
         config['xmlrpc_port'] = int(args.port)
     config['admin_passwd'] = 'admin'
     config['db_password'] = 'a2aevl8w' # TODO from .openerpserverrc
-    config['addons_path'] = args.addons.replace(':',',')
+
     if args.addons:
-        args.addons = args.addons.split(':')
+        args.addons = args.addons.replace(':',',').split(',')
     else:
         args.addons = []
 
+    config['addons_path'] = ','.join(args.addons)
+
     import logging
     openerp.netsvc.init_alternative_logger()
     logging.getLogger('openerp').setLevel(logging.CRITICAL)