diff --git a/.swiftlint.yml b/.swiftlint.yml
index 998ab2c849..378bd666eb 100644
--- a/.swiftlint.yml
+++ b/.swiftlint.yml
@@ -5,6 +5,7 @@
 # Paths to include in lint
 included:
   - Sources/BraintreeCore
+  - Sources/BraintreeAmericanExpress
 
 excluded:
   - Sources/BraintreeCore/BTAPIPinnedCertificates.swift
diff --git a/Sources/BraintreeAmericanExpress/BTAmericanExpressClient.swift b/Sources/BraintreeAmericanExpress/BTAmericanExpressClient.swift
index 72eff32f8d..97f87f1f81 100644
--- a/Sources/BraintreeAmericanExpress/BTAmericanExpressClient.swift
+++ b/Sources/BraintreeAmericanExpress/BTAmericanExpressClient.swift
@@ -25,11 +25,15 @@ import BraintreeCore
     ///   if it fails, `rewardsBalance` will be `nil` and `error` will describe the failure.
     ///  - Note: If the nonce is associated with an ineligible card or a card with insufficient points, the rewardsBalance will contain this information as `errorMessage` and `errorCode`.
     @objc(getRewardsBalanceForNonce:currencyIsoCode:completion:)
-    public func getRewardsBalance(forNonce nonce: String, currencyISOCode: String, completion: @escaping (BTAmericanExpressRewardsBalance?, Error?) -> Void) {
+    public func getRewardsBalance(
+        forNonce nonce: String,
+        currencyISOCode: String,
+        completion: @escaping (BTAmericanExpressRewardsBalance?, Error?) -> Void
+    ) {
         let parameters = BTAmexRewardsBalanceRequest(currencyIsoCode: currencyISOCode, paymentMethodNonce: nonce)
         apiClient.sendAnalyticsEvent(BTAmericanExpressAnalytics.started)
 
-        apiClient.get("v1/payment_methods/amex_rewards_balance", parameters: parameters) { [weak self] body, response, error in
+        apiClient.get("v1/payment_methods/amex_rewards_balance", parameters: parameters) { [weak self] body, _, error in
             guard let self else {
                 completion(nil, BTAmericanExpressError.deallocated)
                 return