diff --git a/tests/test_health.py b/tests/test_health.py
index 080ef80..a88c859 100644
--- a/tests/test_health.py
+++ b/tests/test_health.py
@@ -35,6 +35,10 @@ class HealthCheckTest(unittest.TestCase):
             if a[:2] == ['uci', 'set']:
                 k, _, v = a[2].partition('=')
                 self.uci_state[k] = v
+            if a[:2] == ['uci', 'delete']:
+                for k in list(self.uci_state):
+                    if k == a[2] or k.startswith(a[2] + '.'):
+                        del self.uci_state[k]
             if a[:2] == ['uci', 'get']:
                 return (0, self.uci_state.get(a[2], '') + '\n', '')
             if a[0] == 'uci' and a[1] == 'show':