diff --git a/lib/query.py b/lib/query.py
index a3e5224b83cdb8e70c831feb1c76dad0981e6205..7efdaa4ec2e4038451198b43a079a01bc61d44e0 100644
--- a/lib/query.py
+++ b/lib/query.py
@@ -2496,7 +2496,7 @@ _NETWORK_STATS_FIELDS = {
   }
 
 
-def _GetNetworkStatsField(field, kind, ctx):
+def _GetNetworkStatsField(field, kind, ctx, _):
   """Gets the value of a "stats" field from L{NetworkQueryData}.
 
   @param field: Field name