diff --git a/product_docs/docs/pgd/5.6/terminology.mdx b/product_docs/docs/pgd/5.6/terminology.mdx
index 2e1a76092f7..12953ae6ca4 100644
--- a/product_docs/docs/pgd/5.6/terminology.mdx
+++ b/product_docs/docs/pgd/5.6/terminology.mdx
@@ -27,7 +27,7 @@ How [Raft](#replicated-available-fault-tolerance-raft) makes group-wide decision
 
 #### Cluster
 
-Generically, a cluster is a group of multiple redundant systems arranged to appear to end users as one system. See also [PGD cluster](#pgd-cluster) and [Postgres cluster](#postgres-cluster).
+Generically, a cluster is a group of multiple systems arranged to appear to end users as one system. See also [PGD cluster](#pgd-cluster) and [Postgres cluster](#postgres-cluster).
 
 ####  DDL (data definition language)