diff --git a/carriers/ups.js b/carriers/ups.js
index 53f358f..93fe4e5 100644
--- a/carriers/ups.js
+++ b/carriers/ups.js
@@ -136,7 +136,7 @@ function UPS(options) {
             };
 
             if (err) {
-                if (usps.isTrackingNumberValid(trackingNumber)) {
+                if (options.usps && usps.isTrackingNumberValid(trackingNumber)) {
                     return usps.track(trackingNumber, callback);
                 }
 
@@ -157,7 +157,7 @@ function UPS(options) {
             }
 
             // UPS Mail Innovations doesn't injest USPS data reliably. Fallback to USPS when UPS doesn't give us enough data.
-            if (activitiesList.length <= 1 && usps.isTrackingNumberValid(trackingNumber)) {
+            if (options.usps && activitiesList.length <= 1 && usps.isTrackingNumberValid(trackingNumber)) {
                 return usps.track(trackingNumber, callback);
             }
 
diff --git a/test/carriers/ups.js b/test/carriers/ups.js
index ceb56c5..2b068c5 100644
--- a/test/carriers/ups.js
+++ b/test/carriers/ups.js
@@ -21,9 +21,6 @@ describe('UPS', function() {
             baseUrl: 'https://wwwcie.ups.com',
             password: process.env.UPS_PASSWORD,
             username: process.env.UPS_USERNAME
-        },
-        usps: {
-            userId: process.env.USPS_USERID
         }
     });