diff --git a/corporate/tests/test_stripe.py b/corporate/tests/test_stripe.py
index b1337ffc09..34f6081418 100644
--- a/corporate/tests/test_stripe.py
+++ b/corporate/tests/test_stripe.py
@@ -236,15 +236,17 @@ def normalize_fixture_data(
     ]
 
     # We'll replace "invoice_prefix": "A35BC4Q" with something like "invoice_prefix": "NORMA01"
+    # For patterns whose matches can be too generic like `[0-9]+`, include matching field in the translation
+    # to avoid it replacing other occurrences of the pattern. See `exp_month` for example.
     pattern_translations = {
-        r'"exp_month": ([0-9]+)': "1",
-        r'"exp_year": ([0-9]+)': "9999",
-        r'"postal_code": "([0-9]+)"': "12345",
-        r'"invoice_prefix": "([A-Za-z0-9]{7,8})"': "NORMALIZED",
-        r'"fingerprint": "([A-Za-z0-9]{16})"': "NORMALIZED",
-        r'"number": "([A-Za-z0-9]{7,8}-[A-Za-z0-9]{4})"': "NORMALIZED",
-        r'"address": "([A-Za-z0-9]{9}-test_[A-Za-z0-9]{12})"': "000000000-test_NORMALIZED",
-        r'"client_secret": "([\w]+)"': "NORMALIZED",
+        r'"exp_month": [0-9]+': '"exp_month": 1',
+        r'"exp_year": [0-9]+': '"exp_year": 9999',
+        r'"postal_code": "[0-9]+"': '"postal_code": "12345"',
+        r'"invoice_prefix": "[A-Za-z0-9]{7,8}"': '"invoice_prefix": "NORMALIZED"',
+        r'"fingerprint": "[A-Za-z0-9]{16}"': '"fingerprint": "NORMALIZED"',
+        r'"number": "[A-Za-z0-9]{7,8}-[A-Za-z0-9]{4}"': '"number": "NORMALIZED"',
+        r'"address": "[A-Za-z0-9]{9}-test_[A-Za-z0-9]{12}"': '"address": "000000000-test_NORMALIZED"',
+        r'"client_secret": "[\w]+"': '"client_secret": "NORMALIZED"',
         r'"url": "https://billing.stripe.com/p/session/test_([\w]+)"': "NORMALIZED",
         r'"url": "https://checkout.stripe.com/c/pay/cs_test_([\w#%]+)"': "NORMALIZED",
         r'"receipt_url": "https://pay.stripe.com/receipts/invoices/([\w-]+)\?s=[\w]+"': "NORMALIZED",