diff --git a/common/config/nginx/snippets/fastcgi/config-php.conf b/common/config/nginx/snippets/fastcgi/config-php.conf
index 886bb16..013e2fe 100644
--- a/common/config/nginx/snippets/fastcgi/config-php.conf
+++ b/common/config/nginx/snippets/fastcgi/config-php.conf
@@ -14,3 +14,7 @@ fastcgi_param HTTP_PROXY "";
 
 fastcgi_index index.php;
 include fastcgi.conf;
+
+# Enforce HTTPS (gets lost through chaining proxies)
+fastcgi_param REQUEST_SCHEME https;
+fastcgi_param HTTPS on;