diff --git a/docs/reference/migration/migrate_6_0/cat.asciidoc b/docs/reference/migration/migrate_6_0/cat.asciidoc
index b7953c7c8b8..013c0705991 100644
--- a/docs/reference/migration/migrate_6_0/cat.asciidoc
+++ b/docs/reference/migration/migrate_6_0/cat.asciidoc
@@ -5,5 +5,3 @@
 
 Previously if a queue size backing a thread pool was unbounded, the cat thread pool API would output an empty string in
 the queue_size column. This has been changed to now output -1 so that the output is always present and always numeric.
-Note that if you're running in a mixed version cluster with 5.0.x and 5.1.y nodes, you will see different responses
-from the cat thread pool API depending on the version of the node that your request hits.