diff --git a/suite-traffic.js b/suite-traffic.js
index 5da728c..60b7cd5 100644
--- a/suite-traffic.js
+++ b/suite-traffic.js
@@ -203,6 +203,12 @@ async function stop(memberId, adId) {
   // `bought` preserves the original order size so the member's history still
   // shows what they launched, not just what it ended up costing them.
   if (row.bought == null) row.bought = row.impressions;
+
+  // A handful of rows on the network carry a `remaining` larger than their
+  // `assigned` (a pre-existing counter quirk). Clamp, or a member sees
+  // "1,002 returned" on an ad they bought 1,000 impressions for.
+  unserved = Math.min(unserved, row.bought);
+  served = row.bought - unserved;
   row.stopped = true;
   row.stoppedAt = new Date().toISOString();
   row.served = served;