diff --git a/src/event-sources/utils.js b/src/event-sources/utils.js
index c5537e12..714e0f99 100644
--- a/src/event-sources/utils.js
+++ b/src/event-sources/utils.js
@@ -4,7 +4,7 @@ function getPathWithQueryStringParams ({
   event,
   query = event.multiValueQueryStringParameters,
   // NOTE: Use `event.pathParameters.proxy` if available ({proxy+}); fall back to `event.path`
-  path = (event.pathParameters && event.pathParameters.proxy && `/${event.pathParameters.proxy}`) || event.path,
+  path = (event.pathParameters && event.pathParameters.proxy && `/${event.pathParameters.proxy}`) ?? event.path,
   // NOTE: Strip base path for custom domains
   stripBasePath = '',
   replaceRegex = new RegExp(`^${stripBasePath}`)