diff --git a/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2 b/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
index 869f313f..43ae99b6 100644
--- a/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
+++ b/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
@@ -82,7 +82,7 @@ use_presence: {{ matrix_synapse_use_presence|to_json }}
 # For example, for room version 1, default_room_version should be set
 # to "1".
 #
-default_room_version: "{{ matrix_synapse_default_room_version|to_json }}"
+default_room_version: {{ matrix_synapse_default_room_version|to_json }}
 
 # The GC threshold parameters to pass to `gc.set_threshold`, if defined
 #