diff --git a/tests/integration/network/test_node_storage.py b/tests/integration/network/test_node_storage.py
index 8475f2bc8..a4d23c45c 100644
--- a/tests/integration/network/test_node_storage.py
+++ b/tests/integration/network/test_node_storage.py
@@ -46,6 +46,7 @@ def test_one_node_stores_a_bunch_of_others(federated_ursulas, lonely_ursula_make
 
     yield deferToThread(start_lonely_learning_loop)
 
-    assert list(newcomer.known_nodes)
-    assert len(list(newcomer.known_nodes)) == len(list(newcomer.node_storage.all(True)))
-    assert set(list(newcomer.known_nodes)) == set(list(newcomer.node_storage.all(True)))
+    matured_known_nodes = list(node.mature() for node in newcomer.known_nodes)
+    assert list(matured_known_nodes)
+    assert len(matured_known_nodes) == len(list(newcomer.node_storage.all(True)))
+    assert set(matured_known_nodes) == set(list(newcomer.node_storage.all(True)))