diff --git a/ansible/main.yml b/ansible/main.yml
index b075cf9..fb8a31c 100644
--- a/ansible/main.yml
+++ b/ansible/main.yml
@@ -2,19 +2,19 @@
 - name: Configure Nimbus master
   hosts: nimbus-master
   roles:
-    - { role: origin-cert }
-    - { role: infra-role-eth2-testnet-site }
+    # - { role: origin-cert }
+    # - { role: infra-role-eth2-testnet-site }
     - { role: infra-role-beacon-node,
         beacon_node_network: 'testnet0',
         beacon_node_build_flavour: 'rlpx',
         beacon_node_total_nodes: 2,
-        beacon_node_disovery_port: 9000,
+        beacon_node_discovery_port: 9000,
         beacon_node_listening_port: 9000 }
     - { role: infra-role-beacon-node,
         beacon_node_network: 'testnet1',
         beacon_node_build_flavour: 'rlpx',
         beacon_node_total_nodes: 5,
-        beacon_node_disovery_port: 9100,
+        beacon_node_discovery_port: 9100,
         beacon_node_listening_port: 9100 }
 
 - name: Configure Nimbus cluster
@@ -24,5 +24,5 @@
         beacon_node_network: 'testnet1',
         beacon_node_build_flavour: 'rlpx',
         beacon_node_total_nodes: 10,
-        beacon_node_disovery_port: 9100,
+        beacon_node_discovery_port: 9100,
         beacon_node_listening_port: 9100 }