diff --git a/product_docs/docs/pgd/5/sequences.mdx b/product_docs/docs/pgd/5/sequences.mdx
index 12da76b6fbe..a588a03668f 100644
--- a/product_docs/docs/pgd/5/sequences.mdx
+++ b/product_docs/docs/pgd/5/sequences.mdx
@@ -304,10 +304,10 @@ the next value.
 ```sql
 -- determine highest sequence value across all nodes
 SELECT max((x->'response'->'command_tuples'->0->>'nextval')::bigint)
-    FROM json_array_elements(
+    FROM jsonb_array_elements(
         bdr.run_on_all_nodes(
             E'SELECT nextval(\'public.sequence\');'
-            )::jsonb AS x;
+            )::jsonb) AS x;
 
 -- turn into a galloc sequence
 SELECT bdr.alter_sequence_set_kind('public.sequence'::regclass, 'galloc', $MAX + $MARGIN);