diff --git a/crmpixel.go b/crmpixel.go
index 8730eac..188210e 100644
--- a/crmpixel.go
+++ b/crmpixel.go
@@ -240,7 +240,7 @@ func setTrackingCookieAndRecirect(w http.ResponseWriter, r *http.Request) {
 
 	//set all cookie from url
 	for k, v := range m {
-		if k == "lid" || k == "url" || k == "expire" { //skip lead id and URL and expire
+		if k == "lid" || k == "url" || k == "expire" || k == "nonce" || k == "signature" || k == "timestamp" { //skip lead id and URL and expire
 			continue
 		}
 		log.Printf("set cookie %s=%s", k, v)