diff --git a/tests/test_bip32_speed.py b/tests/test_bip32_speed.py
index 9080a4798..7153f17b4 100644
--- a/tests/test_bip32_speed.py
+++ b/tests/test_bip32_speed.py
@@ -12,6 +12,8 @@ class TestAddresses(common.TrezorTest):
                                             label='test',
                                             language='english')
 
+        self.client.get_address('Bitcoin', [0]) # to compute root node via BIP39
+
         for depth in range(8):
             start = time.time()
             self.client.get_address('Bitcoin', range(depth))
@@ -28,6 +30,8 @@ class TestAddresses(common.TrezorTest):
                                             label='test',
                                             language='english')
 
+        self.client.get_address('Bitcoin', [0]) # to compute root node via BIP39
+
         for depth in range(8):
             start = time.time()
             self.client.get_address('Bitcoin', range(-depth, 0))