diff --git a/src/FimFic2Epub.js b/src/FimFic2Epub.js
index 03245ec..3f5b14a 100644
--- a/src/FimFic2Epub.js
+++ b/src/FimFic2Epub.js
@@ -789,6 +789,7 @@ class FimFic2Epub extends EventEmitter {
   }
 
   replaceRemoteResources () {
+    if (this.remoteResources.size === 0) return
     if (!this.options.includeExternal) {
       this.remoteResources.forEach((r, url) => {
         if (r.originalUrl && r.where) {