diff --git a/control-plane/account_store_test.go b/control-plane/account_store_test.go
index bc5d2d9..fbee226 100644
--- a/control-plane/account_store_test.go
+++ b/control-plane/account_store_test.go
@@ -424,6 +424,9 @@ func TestAccountStoreSyntheticConcurrentReadWrite(t *testing.T) {
 		"lock_wait_count": totalWaitCount, "lock_wait_ms": float64(totalWaitDuration.Microseconds()) / 1000,
 		"pending_queue_items": 0,
 	}
+	if percentile(95) >= 25 || percentile(99) >= 100 || diskBytes >= 2*1024*1024 || walBytes != 0 || totalWaitCount != 0 || totalWaitDuration != 0 || maxOpenConnections != 1 || busyTimeout != 5000 {
+		t.Fatalf("capacity thresholds failed: %+v", metrics)
+	}
 	encoded, err := json.Marshal(metrics)
 	if err != nil {
 		t.Fatal(err)