diff --git a/src/middleware/route-ratelimit.js b/src/middleware/route-ratelimit.js
index a89ee2c..c1d6b02 100644
--- a/src/middleware/route-ratelimit.js
+++ b/src/middleware/route-ratelimit.js
@@ -151,7 +151,8 @@ class RateLimits {
           // apply paid-access rate limits.
           // console.log(`origin: ${JSON.stringify(origin, null, 2)}`)
           // console.log(`whitelist: ${JSON.stringify(WHITELIST_DOMAINS, null, 2)}`)
-          if (this.isInWhitelist(origin)) {
+          const isInWhitelist = _this.isInWhitelist(origin)
+          if (isInWhitelist) {
             pointsToConsume = WHITELIST_RATE_LIMIT
             res.locals.pointsToConsume = pointsToConsume // Feedback for tests.
           }