two primary replicas at the same time

Dear all,

Can you help me?

Just recently configured an Always On.

I am going nuts because I am seeing how the two nodes are primary at the same time (based in the following sentences):

DECLARE @preferredReplica int

SET @preferredReplica = (SELECT [master].sys.fn_hadr_backup_is_preferred_replica('mydb’))

IF (@preferredReplica = 0)
BEGIN
PRINT 'go ahead'

END

Always get ‘go ahead’ PRINT statement regadless from what node be launched.

And if I launch from my primary replica (that one I see from Availability Group Properties->General tab)

select role_desc,replica_server_name,roleFROMsys.dm_hadr_availability_replica_statesAS a

   JOINsys.availability_replicasAS b

       ON b.replica_id= a.replica_id

select role_desc,replica_server_name,roleFROM xxsql02.master.sys.dm_hadr_availability_replica_statesAS a

   JOIN xxsql02.master.sys.availability_replicasAS b

       ON b.replica_id= a.replica_id

PRIMARY     zzSQL01      1

PRIMARY     xxSQL02      1