diff --git a/tests/test_apps.ethereum.layout.py b/tests/test_apps.ethereum.layout.py
index 2aed8384..ef738bb0 100644
--- a/tests/test_apps.ethereum.layout.py
+++ b/tests/test_apps.ethereum.layout.py
@@ -5,24 +5,24 @@ from apps.ethereum.layout import format_amount
 class TestEthereumLayout(unittest.TestCase):
 
     def test_format(self):
-        text = format_amount((1).to_bytes(5, 'little'), None, 1)
+        text = format_amount((1).to_bytes(5, 'big'), None, 1)
         self.assertEqual(text, '1 Wei')
-        text = format_amount((1000).to_bytes(5, 'little'), None, 1)
+        text = format_amount((1000).to_bytes(5, 'big'), None, 1)
         self.assertEqual(text, '1000 Wei')
 
-        text = format_amount((1000000000000000001).to_bytes(20, 'little'), None, 1)
+        text = format_amount((1000000000000000001).to_bytes(20, 'big'), None, 1)
         self.assertEqual(text, '1 ETH')
-        text = format_amount((10000000000000000001).to_bytes(20, 'little'), None, 1)
+        text = format_amount((10000000000000000001).to_bytes(20, 'big'), None, 1)
         self.assertEqual(text, '10 ETH')
-        text = format_amount((10000000000000000001).to_bytes(20, 'little'), None, 61)
+        text = format_amount((10000000000000000001).to_bytes(20, 'big'), None, 61)
         self.assertEqual(text, '10 ETC')
-        text = format_amount((1000000000000000001).to_bytes(20, 'little'), None, 31)
+        text = format_amount((1000000000000000001).to_bytes(20, 'big'), None, 31)
         self.assertEqual(text, '1 tRSK')
 
         # unknown chain
-        text = format_amount((1).to_bytes(20, 'little'), None, 9999)
+        text = format_amount((1).to_bytes(20, 'big'), None, 9999)
         self.assertEqual(text, '1 Wei')
-        text = format_amount((10000000000000000001).to_bytes(20, 'little'), None, 9999)
+        text = format_amount((10000000000000000001).to_bytes(20, 'big'), None, 9999)
         self.assertEqual(text, '10 UNKN')