diff --git a/usr.sbin/lmcconfig/lmcconfig.c b/usr.sbin/lmcconfig/lmcconfig.c
index eb80dbe3149..65356a2184b 100644
--- a/usr.sbin/lmcconfig/lmcconfig.c
+++ b/usr.sbin/lmcconfig/lmcconfig.c
@@ -222,7 +222,7 @@ call_driver(unsigned long cmd, struct iohdr *iohdr)
 {
   int error = 0;
 
-  strncpy(iohdr->ifname, ifname, sizeof(iohdr->ifname));
+  strlcpy(iohdr->ifname, ifname, sizeof(iohdr->ifname));
   iohdr->cookie = NGM_LMC_COOKIE;
   iohdr->iohdr = iohdr;