diff --git a/lib/core/buildFullPath.js b/lib/core/buildFullPath.js
index 3050bd64..9cb9d7c6 100644
--- a/lib/core/buildFullPath.js
+++ b/lib/core/buildFullPath.js
@@ -15,7 +15,7 @@ import combineURLs from '../helpers/combineURLs.js';
  */
 export default function buildFullPath(baseURL, requestedURL, allowAbsoluteUrls) {
   let isRelativeUrl = !isAbsoluteURL(requestedURL);
-  if (baseURL && (isRelativeUrl || allowAbsoluteUrls == false)) {
+  if (baseURL && (isRelativeUrl || allowAbsoluteUrls === false)) {
     return combineURLs(baseURL, requestedURL);
   }
   return requestedURL;