diff --git a/tools/testing/tests/fido2.py b/tools/testing/tests/fido2.py
index 94a361d..88fbe9d 100644
--- a/tools/testing/tests/fido2.py
+++ b/tools/testing/tests/fido2.py
@@ -223,7 +223,7 @@ class FIDO2Tests(Tester):
 
         with Test("Get shared secret"):
             key_agreement, shared_secret = (
-                self.client.pin_protocol._init_shared_secret()
+                self.client.pin_protocol.get_shared_secret()
             )
             cipher = Cipher(
                 algorithms.AES(shared_secret),