diff --git a/README.md b/README.md
index 78f880a1..273b3845 100644
--- a/README.md
+++ b/README.md
@@ -1606,8 +1606,8 @@ which contains connection details for the local database.
     These commands display connection information for each pair of
     nodes in the replication cluster.
 
-    - `cluster matrix` polls each registered server and asks it to
-      connect to each other node;
+    - `cluster matrix` runs a `cluster show` on each node and arranges
+      the results in a matrix, recording success or failure;
 
 	- `cluster diagnose` runs a `cluster matrix` on each node and
       combines the results in a single matrix.