diff --git a/tester.py b/tester.py
index 3703f0eaa9176dcf3359858ca82dc0e5f9d43d90..1d6f09b3c556378b99269d732f3c96671bd2c67f 100755
--- a/tester.py
+++ b/tester.py
@@ -431,7 +431,8 @@ class Tester():
                 recipients = recipients.replace('sysadmin@ubicast.eu', '').replace(',,', ',')
             elif utils.get_conf('PREMIUM_SUPPORT') != '0':
                 system_domain = '[PREMIUM] %s' % system_domain
-                recipients = recipients.replace('sysadmin@ubicast.eu', 'sysadmin+premium@ubicast.eu')
+                recipients = recipients.replace('sysadmin@ubicast.eu', '').replace(',,', ',')
+                recipients += ',sysadmin+premium@ubicast.eu'
             recipients = recipients.strip(',')
             if not recipients:
                 log('No recipients defined for email sending. Set a value for EMAIL_ADMINS.')