diff --git a/isisd/isis_tlv.c b/isisd/isis_tlv.c
index 3dae5d8..1194f04 100644
--- a/isisd/isis_tlv.c
+++ b/isisd/isis_tlv.c
@@ -1069,7 +1069,7 @@
 	goto err;
       if (!stream_putc (stream, (u_char) 255))	/* LENGHT */
 	goto err;
-      stream_forward_endp (stream, 255);	/* VALUE */
+      stream_put (stream, NULL, 255);		/* zero padding */
     }
 
   left = STREAM_SIZE (stream) - stream_get_endp (stream);
@@ -1086,7 +1086,7 @@
 
   stream_putc (stream, PADDING);
   stream_putc (stream, left - 2);
-  stream_forward_endp (stream, left - 2);
+  stream_put (stream, NULL, left-2);
 
   return ISIS_OK;