diff --git a/trezorlib/tests/device_tests/test_msg_lisk_getaddress.py b/trezorlib/tests/device_tests/test_msg_lisk_getaddress.py
index 49d9e1293..5ad308fe3 100644
--- a/trezorlib/tests/device_tests/test_msg_lisk_getaddress.py
+++ b/trezorlib/tests/device_tests/test_msg_lisk_getaddress.py
@@ -16,9 +16,12 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-from .common import *
+import pytest
 
+from .common import TrezorTest
 
+
+@pytest.mark.xfail  # drop when trezor-core PR #90 is merged
 @pytest.mark.skip_t1
 class TestMsgLiskGetaddress(TrezorTest):
 
diff --git a/trezorlib/tests/device_tests/test_msg_lisk_getpublickey.py b/trezorlib/tests/device_tests/test_msg_lisk_getpublickey.py
index 60cb64f3b..1683be4ef 100644
--- a/trezorlib/tests/device_tests/test_msg_lisk_getpublickey.py
+++ b/trezorlib/tests/device_tests/test_msg_lisk_getpublickey.py
@@ -15,9 +15,13 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-from .common import *
+from binascii import hexlify
+import pytest
 
+from .common import TrezorTest
 
+
+@pytest.mark.xfail  # drop when trezor-core PR #90 is merged
 @pytest.mark.skip_t1
 class TestMsgLiskGetPublicKey(TrezorTest):
 
diff --git a/trezorlib/tests/device_tests/test_msg_lisk_signmessage.py b/trezorlib/tests/device_tests/test_msg_lisk_signmessage.py
index 72db0c9c5..022898eb9 100644
--- a/trezorlib/tests/device_tests/test_msg_lisk_signmessage.py
+++ b/trezorlib/tests/device_tests/test_msg_lisk_signmessage.py
@@ -15,9 +15,13 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-from .common import *
+from binascii import hexlify
+import pytest
 
+from .common import TrezorTest
 
+
+@pytest.mark.xfail  # drop when trezor-core PR #90 is merged
 @pytest.mark.skip_t1
 class TestMsgLiskSignmessage(TrezorTest):
 
diff --git a/trezorlib/tests/device_tests/test_msg_lisk_signtx.py b/trezorlib/tests/device_tests/test_msg_lisk_signtx.py
index 65518c74f..81eb6c722 100644
--- a/trezorlib/tests/device_tests/test_msg_lisk_signtx.py
+++ b/trezorlib/tests/device_tests/test_msg_lisk_signtx.py
@@ -16,12 +16,16 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-from .common import *
+from binascii import unhexlify
+import pytest
+
+from .common import TrezorTest
 from trezorlib import messages as proto
 
 PUBLIC_KEY = unhexlify('eb56d7bbb5e8ea9269405f7a8527fe126023d1db2c973cfac6f760b60ae27294')
 
 
+@pytest.mark.xfail  # drop when trezor-core PR #90 is merged
 @pytest.mark.skip_t1
 class TestMsgLiskSignTx(TrezorTest):
 
diff --git a/trezorlib/tests/device_tests/test_msg_lisk_verifymessage.py b/trezorlib/tests/device_tests/test_msg_lisk_verifymessage.py
index ee08f8347..46efbb777 100644
--- a/trezorlib/tests/device_tests/test_msg_lisk_verifymessage.py
+++ b/trezorlib/tests/device_tests/test_msg_lisk_verifymessage.py
@@ -15,10 +15,14 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-from .common import *
+from binascii import unhexlify
+import pytest
+
+from .common import TrezorTest
 from trezorlib import messages as proto
 
 
+@pytest.mark.xfail  # drop when trezor-core PR #90 is merged
 @pytest.mark.skip_t1
 class TestMsgLiskVerifymessage(TrezorTest):