diff --git a/nginx/files/_ssl.conf b/nginx/files/_ssl.conf
index 7bc7bd2..cff3cce 100644
--- a/nginx/files/_ssl.conf
+++ b/nginx/files/_ssl.conf
@@ -16,6 +16,7 @@
   ssl_certificate_key {{ key_file }};
       {%- if site.ssl.chain is defined or site.ssl.authority is defined %}
   ssl_certificate {{ chain_file }};
+  ssl_trusted_certificate {{ chain_file }};
       {%- else %}
   ssl_certificate {{ cert_file }};
       {%- endif %}