diff --git a/roles/synapse/defaults/main/homeserver.config.yml b/roles/synapse/defaults/main/homeserver.config.yml
index 5e4e3a6..47cb681 100644
--- a/roles/synapse/defaults/main/homeserver.config.yml
+++ b/roles/synapse/defaults/main/homeserver.config.yml
@@ -27,4 +27,4 @@ synapse_default_config: >-
 
 synapse_homeserver_config: >-
   {{ synapse_default_config
-    | combine(synapse_config | default({})) }}
+    | combine(synapse_config | default({}), recursive=True) }}