diff --git a/roles/matrix-nginx-proxy/tasks/ssl/setup_ssl_self_signed_obtain_for_domain.yml b/roles/matrix-nginx-proxy/tasks/ssl/setup_ssl_self_signed_obtain_for_domain.yml
index 0e6908346..80838fa67 100644
--- a/roles/matrix-nginx-proxy/tasks/ssl/setup_ssl_self_signed_obtain_for_domain.yml
+++ b/roles/matrix-nginx-proxy/tasks/ssl/setup_ssl_self_signed_obtain_for_domain.yml
@@ -37,4 +37,6 @@
     -keyout {{ matrix_ssl_certificate_cert_key_path }} \
     -out {{ matrix_ssl_certificate_cert_path }} \
     -days 3650
-  when: "not matrix_ssl_certificate_cert_path_stat_result.stat.exists"
\ No newline at end of file
+  become: true
+  become_user: "{{ matrix_user_username }}"
+  when: "not matrix_ssl_certificate_cert_path_stat_result.stat.exists"