diff --git a/packages/experiment-browser/src/experimentClient.ts b/packages/experiment-browser/src/experimentClient.ts
index 0caf977..3f6b34f 100644
--- a/packages/experiment-browser/src/experimentClient.ts
+++ b/packages/experiment-browser/src/experimentClient.ts
@@ -117,9 +117,8 @@ export class ExperimentClient implements Client {
       flagConfigPollingIntervalMillis:
         config.flagConfigPollingIntervalMillis < minFlagPollerIntervalMillis
           ? minFlagPollerIntervalMillis
-          : config.flagConfigPollingIntervalMillis
-          ? config.flagConfigPollingIntervalMillis
-          : Defaults.flagConfigPollingIntervalMillis,
+          : config.flagConfigPollingIntervalMillis ??
+            Defaults.flagConfigPollingIntervalMillis,
     };
     this.poller = new Poller(
       () => this.doFlags(),