diff --git a/htmlhelper.cpp b/htmlhelper.cpp
index 3eb1f5f..4e60b4b 100644
--- a/htmlhelper.cpp
+++ b/htmlhelper.cpp
@@ -140,7 +140,7 @@ static inline void preprocess_link(const httplib::Request& req, const std::strin
         CurlUrl href_url;
         href_url.set(CURLUPART_URL, get_origin(req));
         href_url.set(CURLUPART_PATH, std::string(href_url.get(CURLUPART_PATH).get()) + req.path);
-        href_url.set(CURLUPART_URL, href);
+        href_url.set(CURLUPART_URL, href, CURLU_NON_SUPPORT_SCHEME);
 
         CurlUrl instance_url_base;
         instance_url_base.set(CURLUPART_SCHEME, "https");