diff --git a/nginx/snippets/ssl.conf b/nginx/snippets/ssl.conf
index 5127a81..08a69bf 100644
--- a/nginx/snippets/ssl.conf
+++ b/nginx/snippets/ssl.conf
@@ -12,4 +12,5 @@ ssl_stapling_verify on;
 resolver 127.0.0.1:53 1.1.1.1:53 1.0.0.1:53 '[2606:4700:4700::1111]:53' '[2606:4700:4700::1001]:53' valid=300s;
 resolver_timeout 30s;
 
-add_header Strict-Transport-Security "max-age=31536000";
+# Not needed normally as mailcow has this already set.
+#add_header Strict-Transport-Security "max-age=31536000";