diff --git a/selfdrive/car/tests/test_fw_fingerprint.py b/selfdrive/car/tests/test_fw_fingerprint.py
index ed323b0563..b9926301f1 100755
--- a/selfdrive/car/tests/test_fw_fingerprint.py
+++ b/selfdrive/car/tests/test_fw_fingerprint.py
@@ -45,6 +45,7 @@ class TestFwFingerprint(unittest.TestCase):
             self.assertFalse(len(duplicates), f"{car_model}: Duplicate FW versions: Ecu.{ECU_NAME[ecu[0]]}, {duplicates}")
 
   def test_data_collection_ecus(self):
+    # Asserts no extra ECUs are in the fingerprinting database
     for brand, config in FW_QUERY_CONFIGS.items():
       for car_model, ecus in VERSIONS[brand].items():
         bad_ecus = set(ecus).intersection(config.extra_ecus)
@@ -80,10 +81,11 @@ class TestFwFingerprint(unittest.TestCase):
   def test_fw_request_ecu_whitelist(self):
     for brand, config in FW_QUERY_CONFIGS.items():
       with self.subTest(brand=brand):
-        whitelisted_ecus = set([ecu for r in config.requests for ecu in r.whitelist_ecus])
-        brand_ecus = set([fw[0] for car_fw in VERSIONS[brand].values() for fw in car_fw])
+        whitelisted_ecus = {ecu for r in config.requests for ecu in r.whitelist_ecus}
+        brand_ecus = {fw[0] for car_fw in VERSIONS[brand].values() for fw in car_fw}
+        brand_ecus |= {ecu[0] for ecu in config.extra_ecus}
 
-        # each ecu in brand's fw versions needs to be whitelisted at least once
+        # each ecu in brand's fw versions + extra ecus needs to be whitelisted at least once
         ecus_not_whitelisted = brand_ecus - whitelisted_ecus
 
         ecu_strings = ", ".join([f'Ecu.{ECU_NAME[ecu]}' for ecu in ecus_not_whitelisted])