diff --git a/conf/nginx-primaryonly.conf b/conf/nginx-primaryonly.conf
index 6a7f7d8..d8d912c 100644
--- a/conf/nginx-primaryonly.conf
+++ b/conf/nginx-primaryonly.conf
@@ -12,7 +12,6 @@
 		add_header X-Frame-Options "DENY";
 		add_header X-Content-Type-Options nosniff;
 		add_header Content-Security-Policy "frame-ancestors 'none';";
-		add_header Strict-Transport-Security max-age=31536000;
 	}
 
 	# Nextcloud configuration.