diff --git a/examples/telegraf/net/net_alert_batch.tick b/examples/telegraf/net/net_alert_batch.tick
index f02031a20..6ad8012ef 100644
--- a/examples/telegraf/net/net_alert_batch.tick
+++ b/examples/telegraf/net/net_alert_batch.tick
@@ -20,7 +20,8 @@ var unit = 1s
 
 // Dataframe
 var rawdata = batch
-  |query('''SELECT err_in, err_out, drop_in, drop_out FROM "telegraf"."autogen"."net" ''')
+  // "interface" 'all' has missing some fields - so it must be excluded from results
+  |query('''SELECT err_in, err_out, drop_in, drop_out FROM "telegraf"."autogen"."net" WHERE interface != 'all' ''')
     .period(period)
     .every(every)
     .groupBy('host', 'interface')
diff --git a/examples/telegraf/net/net_alert_stream.tick b/examples/telegraf/net/net_alert_stream.tick
index 590ee81cd..385912023 100644
--- a/examples/telegraf/net/net_alert_stream.tick
+++ b/examples/telegraf/net/net_alert_stream.tick
@@ -22,6 +22,7 @@ var rawdata = stream
     .database('telegraf')
     .retentionPolicy('autogen')
     .measurement('net')
+    .where(lambda: "interface" != 'all' ) // "interface" 'all' has missing error fields so it must be excluded
     .groupBy('host', 'interface')
 
 var err_in = rawdata