diff --git a/test/test_attach.py b/test/test_attach.py
index 5d943d87..b885cb23 100644
--- a/test/test_attach.py
+++ b/test/test_attach.py
@@ -82,7 +82,7 @@ def test_attach_hasio_uri():
 
     srv = ServerStub()
     m = HasIOTest('m', logger, {'description': '', 'uri': 'abc'}, srv)
-    assert srv.secnode.modules['m_io']._uri == 'abc'
+    assert srv.secnode.modules['m_io']._uri == {'value': 'abc'}
     assert m.io == srv.secnode.modules['m_io']
     # two modules with the same IO should use the same io module
     m2 = HasIOTest('m', logger, {'description': '', 'uri': 'abc'}, srv)