diff --git a/plugins/time/ntp_packets b/plugins/time/ntp_packets
index f1e52ec8..9b7d653d 100755
--- a/plugins/time/ntp_packets
+++ b/plugins/time/ntp_packets
@@ -39,13 +39,17 @@ if len(sys.argv) == 2 and sys.argv[1] == 'config':
     print('received.label Received')
     print('received.type DERIVE')
     print('received.graph no')
+    print('received.min 0')
     print('sent.label Rx/Tx')
     print('sent.type DERIVE')
     print('sent.negative received')
+    print('sent.min 0')
     print('dropped.label Dropped')
     print('dropped.type DERIVE')
+    print('dropped.min 0')
     print('ignored.label Ignored')
     print('ignored.type DERIVE')
+    print('ignored.min 0')
     sys.exit(0)
 
 os.environ['PATH'] = '/usr/local/sbin:/usr/local/bin:' + os.environ['PATH']