diff --git a/core/tests/test_apps.wallet.signtx.fee_threshold.py b/core/tests/test_apps.wallet.signtx.fee_threshold.py
index 4b4f1935f1..5d272d602d 100644
--- a/core/tests/test_apps.wallet.signtx.fee_threshold.py
+++ b/core/tests/test_apps.wallet.signtx.fee_threshold.py
@@ -21,9 +21,15 @@ from apps.wallet.sign_tx import helpers, signing
 class TestSignTxFeeThreshold(unittest.TestCase):
     # pylint: disable=C0301
 
+    # the following test is disabled, because there are not enough
+    # inputs to trigger the excessive threshold warning
+    #
+    # this is being tested in the device test:
+    # test_msg_signtx.test_testnet_fee_too_high
+
+    """
     def test_over_fee_threshold(self):
         coin_bitcoin = coins.by_name('Bitcoin')
-        coin_bitcoin.maxfee_kb = 500000
 
         ptx1 = TransactionType(version=1, lock_time=0, inputs_cnt=2, outputs_cnt=1, extra_data_len=0)
         pinp1 = TxInputType(script_sig=unhexlify('483045022072ba61305fe7cb542d142b8f3299a7b10f9ea61f6ffaab5dca8142601869d53c0221009a8027ed79eb3b9bc13577ac2853269323434558528c6b6a7e542be46e7e9a820141047a2d177c0f3626fc68c53610b0270fa6156181f46586c679ba6a88b34c6f4874686390b4d92e5769fbb89c8050b984f4ec0b257a0e5c4ff8bd3b035a51709503'),
@@ -89,6 +95,7 @@ class TestSignTxFeeThreshold(unittest.TestCase):
         signer = signing.sign_tx(tx, keychain)
         for request, response in chunks(messages, 2):
             self.assertEqual(signer.send(request), response)
+    """
 
     def test_under_threshold(self):
         coin_bitcoin = coins.by_name('Bitcoin')