diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index 3c8544621..92c8cba1b 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -110,7 +110,7 @@ matrix_appservice_webhooks_systemd_required_services_list: |
 # We don't enable bridges by default.
 matrix_appservice_slack_enabled: false
 
-matrix_appservice_slack_container_self_build: "{{ matrix_architecture != 'amd64' }}"
+matrix_appservice_slack_container_self_build: "{{ matrix_architecture not in ['amd64', 'arm64'] }}"
 
 # Normally, matrix-nginx-proxy is enabled and nginx can reach matrix-appservice-slack over the container network.
 # If matrix-nginx-proxy is not enabled, or you otherwise have a need for it, you can expose
@@ -444,7 +444,7 @@ matrix_mx_puppet_skype_database_password: "{{ matrix_synapse_macaroon_secret_key
 # We don't enable bridges by default.
 matrix_mx_puppet_slack_enabled: false
 
-matrix_mx_puppet_slack_container_image_self_build: "{{ matrix_architecture not in ['amd64', 'arm64'] }}"
+matrix_mx_puppet_slack_container_image_self_build: "{{ matrix_architecture != 'amd64'}}"
 
 matrix_mx_puppet_slack_systemd_required_services_list: |
   {{