diff --git a/zebra/zserv.c b/zebra/zserv.c
index bb7937d..10dd5fa 100644
--- a/zebra/zserv.c
+++ b/zebra/zserv.c
@@ -526,7 +526,7 @@
 
   /* Write next-hop number */
   if (nhnummark)
-    stream_putw_at (s, nhnummark, nhnum);
+    stream_putc_at (s, nhnummark, nhnum);
   
   /* Write packet size. */
   stream_putw_at (s, 0, stream_get_endp (s));