diff --git a/docs/keyConcepts.md b/docs/keyConcepts.md
index b5b674b53..597b0b9ce 100644
--- a/docs/keyConcepts.md
+++ b/docs/keyConcepts.md
@@ -770,9 +770,10 @@ VictoriaMetrics buffers recently ingested samples in memory for up to a few seco
 This bufferring improves data ingestion performance. The buffered samples are invisible in query results, even if `-search.latencyOffset` command-line flag is set to 0,
 or if `latency_offset` query arg is set to 0.
 You can send GET request to `/internal/force_flush` http handler at single-node VictoriaMetrics
-or at `vmstorage` at [cluster version of VictoriaMetrics](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html)
-in order to forcibly flush the buffered samples to disk, so become visible for querying. The `/internal/force_flush` handler
-is provided for debugging and testing purposes only. Do not call it in production, since this may significantly slow down data ingestion.
+or to `vmstorage` at [cluster version of VictoriaMetrics](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html)
+in order to forcibly flush the buffered samples to disk, so they become visible for querying. The `/internal/force_flush` handler
+is provided for debugging and testing purposes only. Do not call it in production, since this may significantly slow down data ingestion
+performance and increase resource usage.
 
 ### MetricsQL