diff --git a/tests/test_gossip.py b/tests/test_gossip.py
index 5afe5f1c9..acbeeba94 100644
--- a/tests/test_gossip.py
+++ b/tests/test_gossip.py
@@ -244,7 +244,7 @@ def test_only_announce_one_dns(node_factory, bitcoind):
     # and test that we can't announce more than one DNS address
     l1 = node_factory.get_node(may_fail=True, expect_fail=True,
                                options={'announce-addr': ['localhost.localdomain:12345', 'example.com:12345']})
-    assert l1.daemon.is_in_stderr("Only one DNS can be announced")
+    wait_for(lambda: l1.daemon.is_in_stderr("Only one DNS can be announced"))
 
 
 @pytest.mark.developer("needs DEVELOPER=1")
diff --git a/tests/test_plugin.py b/tests/test_plugin.py
index 8a9f395ac..c18be94a5 100644
--- a/tests/test_plugin.py
+++ b/tests/test_plugin.py
@@ -95,7 +95,7 @@ def test_option_types(node_factory):
 
     # the node should fail to start, and we get a stderr msg
     assert not n.daemon.running
-    assert n.daemon.is_in_stderr('bool_opt: ! does not parse as type bool')
+    wait_for(lambda: n.daemon.is_in_stderr('bool_opt: ! does not parse as type bool'))
 
     # What happens if we give it a bad int-option?
     n = node_factory.get_node(options={