diff --git a/exec/nntpservice.js b/exec/nntpservice.js
index 9f8f81a98c664104a003a8e2440f2860e463abed..5effe2ba5ff435493dec3d30b24c7c4ed9734df1 100644
--- a/exec/nntpservice.js
+++ b/exec/nntpservice.js
@@ -85,7 +85,7 @@ function write(str)
 function writeln(str)
 {
 	if(debug)
-		log(format("rsp: %s",str));
+		log("rsp: " + str);
 	write(str + "\r\n");
 }