diff --git a/roles/matrix-grafana/defaults/main.yml b/roles/matrix-grafana/defaults/main.yml
index 381a9abf..ffdfa132 100644
--- a/roles/matrix-grafana/defaults/main.yml
+++ b/roles/matrix-grafana/defaults/main.yml
@@ -16,6 +16,10 @@ matrix_grafana_dashboard_download_urls:
   - "https://raw.githubusercontent.com/matrix-org/synapse/master/contrib/grafana/synapse.json"
   - "https://raw.githubusercontent.com/rfrail3/grafana-dashboards/master/prometheus/node-exporter-full.json"
 
+# matrix_grafana_dashboard_download_urls_all contains the full list (of URLs) of dashboards to download.
+# This variable is overriden elsewhere and additional URLs are injected into it (besides those seen in `matrix_grafana_dashboard_download_urls`) based on the enabled components.
+matrix_grafana_dashboard_download_urls_all: "{{ matrix_grafana_dashboard_download_urls }}"
+
 matrix_grafana_base_path: "{{ matrix_base_data_path }}/grafana"
 matrix_grafana_config_path: "{{ matrix_grafana_base_path }}/config"
 matrix_grafana_data_path: "{{ matrix_grafana_base_path }}/data"