diff --git a/tests/fifo_dlq_probe.py b/tests/fifo_dlq_probe.py
index fdd7359..04769d7 100644
--- a/tests/fifo_dlq_probe.py
+++ b/tests/fifo_dlq_probe.py
@@ -89,7 +89,15 @@ def check_dlq():
         b = sqs.receive_message(QueueUrl=main_url, MaxNumberOfMessages=1).get("Messages", [])
         print("attempt %d: %s" % (attempt + 1, "received" if b else "empty"), flush=True)
         time.sleep(1.5)
-    dlq_msgs = drain(dlq_url)
+    # Перенос в DLQ выполняет фоновый тик PeriodicTasks (период 1с) при
+    # истечении VisibilityTimeout. Мгновенная проверка гоняет с фазой тика —
+    # опрашиваем DLQ до 10с.
+    dlq_msgs = []
+    for _ in range(10):
+        dlq_msgs = drain(dlq_url)
+        if dlq_msgs:
+            break
+        time.sleep(1)
     ok = len(dlq_msgs) == 1 and dlq_msgs[0]["Body"] == "to-dlq"
     results["dlq"] = ok
     print("dlq: count=%d body=%s %s" % (len(dlq_msgs), dlq_msgs[0]["Body"] if dlq_msgs else None,