diff --git a/doc/operation-and-maintenance/Cluster-configuration-and-node-management.md b/doc/operation-and-maintenance/Cluster-configuration-and-node-management.md
index dc1d35b56cd..e005f4ed6d3 100644
--- a/doc/operation-and-maintenance/Cluster-configuration-and-node-management.md
+++ b/doc/operation-and-maintenance/Cluster-configuration-and-node-management.md
@@ -184,7 +184,8 @@ Checklist:
     If it is not equal, you could have some configuration or networking issues.
     You can check the `unavailableNodes`, `remoteNodesWithUnknownTables`,
     and `remoteNodesWithMissingTables` lists for more information (generally, these lists should be empty).
-    You can read the description for other fields of `systemInfo` in the GraphQL schema file.
+    You can read the description for other fields of `systemInfo` in the
+    [GraphQL API reference](../graphql-api/admin-graphql-doc.html#definition-CETSSystemInfo).
 
     For a properly configured 2 nodes cluster the metrics would show something like that:
 
diff --git a/doc/operation-and-maintenance/MongooseIM-metrics.md b/doc/operation-and-maintenance/MongooseIM-metrics.md
index e2b6159ac5b..054afe9e88b 100644
--- a/doc/operation-and-maintenance/MongooseIM-metrics.md
+++ b/doc/operation-and-maintenance/MongooseIM-metrics.md
@@ -192,7 +192,7 @@ Metrics specific to an extension, e.g. Message Archive Management, are described
 | `joined_nodes` | Joined nodes (nodes that have our local tables running). |
 | `discovered_nodes` | Discovered nodes (nodes that are extracted from the discovery backend). |
 | `remote_nodes_without_disco` | Nodes that have more tables registered than the local node. |
-| `remote_nodes_with_unknown_tables` | Nodes that have more tables registered than the local node. |
+| `remote_nodes_with_unknown_tables` | Nodes with unknown tables. |
 | `remote_unknown_tables` | Unknown remote tables. |
 | `remote_nodes_with_missing_tables` | Nodes that are available, but do not host some of our local tables. |
 | `remote_missing_tables` | Nodes that replicate at least one of our local tables to a different list of nodes. |
diff --git a/doc/tutorials/CETS-configure.md b/doc/tutorials/CETS-configure.md
index a748f16ccf3..b853e2e96d1 100644
--- a/doc/tutorials/CETS-configure.md
+++ b/doc/tutorials/CETS-configure.md
@@ -5,7 +5,7 @@ across the MongooseIM cluster. It could be used to store:
 
 - information about online XMPP sessions;
 - information about outgoung S2S connections;
-- steam management session IDs;
+- stream management session IDs;
 - information about online MUC rooms.
 
 If you want to use CETS instead of Mnesia, ensure that these options are set: