diff --git a/tests/test_trezor.config.py b/tests/test_trezor.config.py
index 03592516c..2ba52d49a 100644
--- a/tests/test_trezor.config.py
+++ b/tests/test_trezor.config.py
@@ -6,6 +6,20 @@ from trezor import config
 
 class TestConfig(unittest.TestCase):
 
+    def test_wipe(self):
+        config.wipe()
+        config.set(0, 0, b'hello')
+        config.set(1, 1, b'world')
+        v0 = config.get(0, 0)
+        v1 = config.get(1, 1)
+        self.assertEqual(v0, b'hello')
+        self.assertEqual(v1, b'world')
+        config.wipe()
+        v0 = config.get(0, 0)
+        v1 = config.get(1, 1)
+        self.assertIsNone(v0)
+        self.assertIsNone(v1)
+
     def test_set_get(self):
         config.wipe()
         for _ in range(128):