diff --git a/l2tpns.c b/l2tpns.c
index 5d9ad81..66f0214 100644
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -3470,7 +3470,7 @@ static controlt *controlnew(uint16_t mtype)
 	return c;
 }
 
-// send zero block if nothing is waiting
+// send zero block
 // (ZLB send).
 static void controlnull(tunnelidt t)
 {