diff --git a/corporate/tests/test_stripe.py b/corporate/tests/test_stripe.py
index fd293f69e6..fce2a011c2 100644
--- a/corporate/tests/test_stripe.py
+++ b/corporate/tests/test_stripe.py
@@ -125,10 +125,10 @@ def normalize_fixture_data(decorated_function: CallableT, keep: List[str]=[]) ->
     }
     # We'll replace "invoice_prefix": "A35BC4Q" with something like "invoice_prefix": "NORMA01"
     pattern_translations.update({
-        '"invoice_prefix": "[A-Za-z0-9]{7}"': '"invoice_prefix": "NORMA%02d"',
-        '"fingerprint": "[A-Za-z0-9]{16}"': '"fingerprint": "NORMALIZED%06d"',
-        '"number": "[A-Za-z0-9]{7}-[A-Za-z0-9]{4}"': '"number": "NORMALI-%04d"',
-        '"address": "[A-Za-z0-9]{9}-test_[A-Za-z0-9]{12}"': '"address": "000000000-test_NORMALIZED%02d"',
+        '"invoice_prefix": "([A-Za-z0-9]{7})"': 'NORMA%02d',
+        '"fingerprint": "([A-Za-z0-9]{16})"': 'NORMALIZED%06d',
+        '"number": "([A-Za-z0-9]{7}-[A-Za-z0-9]{4})"': 'NORMALI-%04d',
+        '"address": "([A-Za-z0-9]{9}-test_[A-Za-z0-9]{12})"': '000000000-test_NORMALIZED%02d',
         # Does not preserve relative ordering of the timestamps, nor any
         # coordination with the timestamps in setUp mocks (e.g. Plan.created).
         ': (1[5-9][0-9]{8})(?![0-9-])': '1%09d',
@@ -144,8 +144,8 @@ def normalize_fixture_data(decorated_function: CallableT, keep: List[str]=[]) ->
                 if match not in normalized_values[pattern]:
                     normalized_values[pattern][match] = translation % (len(normalized_values[pattern]) + 1,)
                 file_content = file_content.replace(match, normalized_values[pattern][match])
-        file_content = re.sub(r'"risk_score": \d+', '"risk_score": 00', file_content)
-        file_content = re.sub(r'"times_redeemed": \d+', '"times_redeemed": 00', file_content)
+        file_content = re.sub(r'(?<="risk_score": )(\d+)', '00', file_content)
+        file_content = re.sub(r'(?<="times_redeemed": )(\d+)', '00', file_content)
         # Dates
         file_content = re.sub(r'[0-3]\d [A-Z][a-z]{2} 20[1-2]\d', 'NORMALIZED DATE', file_content)
         # IP addresses