diff --git a/README.md b/README.md
index 5268be6..45e091f 100644
--- a/README.md
+++ b/README.md
@@ -497,14 +497,18 @@ Specify the max number of additional tuples visited
 SET hnsw.ef_stream = 10000;
 ```
 
-The scan will also end if reaches `work_mem`, at which point a notice is shown
+The scan will also end if reaches `work_mem`. You can see when this happens by enabling debug messages.
+
+```sql
+SET client_min_messages = debug1;
+```
 
 ```text
-NOTICE:  hnsw index scan exceeded work_mem after 50000 tuples
+DEBUG:  hnsw index scan exceeded work_mem after 10000 tuples
 HINT:  Increase work_mem to scan more tuples.
 ```
 
-Adjust this with:
+If the server has enough memory, you can adjust this with:
 
 ```sql
 SET work_mem = '8MB';
diff --git a/test/t/041_hnsw_streaming.pl b/test/t/041_hnsw_streaming.pl
index f2d9b3b..fa6bde4 100644
--- a/test/t/041_hnsw_streaming.pl
+++ b/test/t/041_hnsw_streaming.pl
@@ -58,6 +58,7 @@ foreach ((30000, 50000, 70000))
 my ($ret, $stdout, $stderr) = $node->psql("postgres", qq(
 	SET enable_seqscan = off;
 	SET hnsw.streaming = on;
+	SET client_min_messages = debug1;
 	SET work_mem = '2MB';
 	SELECT COUNT(*) FROM (SELECT v FROM tst WHERE i % 10000 = 0 ORDER BY v <-> (SELECT v FROM tst LIMIT 1) LIMIT 11) t;
 ));