diff --git a/scripts/daytime.nse b/scripts/daytime.nse
index a6b95af04..623f7df55 100644
--- a/scripts/daytime.nse
+++ b/scripts/daytime.nse
@@ -14,7 +14,7 @@ require "shortport"
 portrule = shortport.port_or_service(13, "daytime", {"tcp", "udp"})
 
 action = function(host, port)
-	local status, result = comm.exchange(host, port, "dummy", {lines=1, proto=port.proto})
+	local status, result = comm.exchange(host, port, "dummy", {lines=1, proto=port.protocol})
 
 	if status then
 		return result