diff --git a/src/js/spidermonkey/xhr.cpp b/src/js/spidermonkey/xhr.cpp
index 6a0160cc6..89ec6011d 100644
--- a/src/js/spidermonkey/xhr.cpp
+++ b/src/js/spidermonkey/xhr.cpp
@@ -619,6 +619,18 @@ xhr_open(JSContext *ctx, unsigned int argc, JS::Value *rval)
 			}
 			char *url = straconcat(ref, "/", xhr->responseURL, NULL);
 
+			if (url) {
+				xhr->uri = get_uri(url, URI_NONE);
+				mem_free(url);
+			}
+			mem_free(ref);
+		}
+	} else {
+		char *ref = get_uri_string(vs->uri, URI_SERVER);
+
+		if (ref) {
+			char *url = straconcat(ref, xhr->responseURL, NULL);
+
 			if (url) {
 				xhr->uri = get_uri(url, URI_NONE);
 				mem_free(url);