diff --git a/roles/matrix-bridge-mautrix-wsproxy/defaults/main.yml b/roles/matrix-bridge-mautrix-wsproxy/defaults/main.yml
index 59446ad2c..73a0cf16f 100644
--- a/roles/matrix-bridge-mautrix-wsproxy/defaults/main.yml
+++ b/roles/matrix-bridge-mautrix-wsproxy/defaults/main.yml
@@ -21,7 +21,7 @@ matrix_mautrix_wsproxy_appservice_address: "http://matrix-mautrix-wsproxy:{{ mat
 
 
 # A list of extra arguments to pass to the container
-matrix_mautrix_wsproxy_container_extra_arguments: []
+matrix_mautrix_wsproxy_container_extra_arguments: ["/usr/bin/mautrix-wsproxy -config /data/config.yaml"]
 
 # List of systemd services that matrix-mautrix-wsproxy.service depends on.
 matrix_mautrix_wsproxy_systemd_required_services_list: ['docker.service']