diff --git a/dns/rfc2136/src/etc/inc/plugins.inc.d/rfc2136.inc b/dns/rfc2136/src/etc/inc/plugins.inc.d/rfc2136.inc
index 1e802cece..2f36beac2 100644
--- a/dns/rfc2136/src/etc/inc/plugins.inc.d/rfc2136.inc
+++ b/dns/rfc2136/src/etc/inc/plugins.inc.d/rfc2136.inc
@@ -200,13 +200,16 @@ function rfc2136_configure_do($verbose = false, $int = null, $updatehost = '', $
         if ($need_update) {
             file_safe("/var/etc/nsupdatecmds{$i}", $upinst);
 
-            $frmt = ['/var/etc/nsupdatecmds%s -k %s'];
-            $args = [$i, $keyfile];
+            $frmt = ['/usr/local/bin/nsupdate -k %s'];
+            $args = [$keyfile];
 
             if (isset($dnsupdate['usetcp'])) {
                 $frmt[] = '-v';
             }
 
+            $args[] = "/var/etc/nsupdatecmds{$i}";
+            $frmt[] = '%s';
+
             mwexecfb($frmt, $args);
         }
     }