diff --git a/isisd/isisd.c b/isisd/isisd.c
index e6679cf..a8d6950 100644
--- a/isisd/isisd.c
+++ b/isisd/isisd.c
@@ -171,7 +171,8 @@
   area->area_tag = strdup (area_tag);
   listnode_add (isis->area_list, area);
 
-  zlog_debug ("new IS-IS area instance %s", area->area_tag);
+  if (isis->debugs & DEBUG_EVENTS)
+    zlog_debug ("New IS-IS area instance %s", area->area_tag);
 
   vty->node = ISIS_NODE;
   vty->index = area;
@@ -260,7 +261,8 @@
        */
       memcpy (isis->sysid, GETSYSID (addr, ISIS_SYS_ID_LEN), ISIS_SYS_ID_LEN);
       isis->sysid_set = 1;
-      zlog_debug ("Router has SystemID %s", sysid_print (isis->sysid));
+      if (isis->debugs & DEBUG_EVENTS)
+	zlog_debug ("Router has SystemID %s", sysid_print (isis->sysid));
     }
   else
     {