diff --git a/sites/BCN01-LAB/ssids.auto.tfvars b/sites/BCN01-LAB/ssids.auto.tfvars
index 33a5788..209bcb4 100644
--- a/sites/BCN01-LAB/ssids.auto.tfvars
+++ b/sites/BCN01-LAB/ssids.auto.tfvars
@@ -29,6 +29,7 @@ wireless_ssids = [
     enabled            = true
     visible            = false   # SSID oculto — no hace broadcast del nombre
     auth_mode          = "open"
+    wpa_encryption_mode = null  # open no admite wpa_encryption_mode
     splash_page        = "Password-protected with custom RADIUS"
     ip_assignment_mode = "Bridge mode"
     use_vlan_tagging   = true