diff --git a/tests/test_protect_call.py b/tests/test_protect_call.py
index 339e54c..fa64d5f 100644
--- a/tests/test_protect_call.py
+++ b/tests/test_protect_call.py
@@ -99,7 +99,7 @@ class TestProtectCall(common.TrezorTest):
 
         def test_backoff(attempts, start):
             if attempts <= 1:
-                expected = 0.2
+                expected = 0
             else:
                 expected = (2 ** (attempts - 2))
             got = time.time() - start