diff --git a/themes/saturn/static/js/webmention.js b/themes/saturn/static/js/webmention.js
index 4ff8287..eceaab2 100644
--- a/themes/saturn/static/js/webmention.js
+++ b/themes/saturn/static/js/webmention.js
@@ -392,7 +392,7 @@ A more detailed example:
     let apiURL = `https://webmention.io/api/mentions.jf2?per-page=${maxWebmentions}&sort-by=${sortBy}&sort-dir=${sortDir}`;
 
     pages.forEach(function (path) {
-      apiURL += `&target[]=${encodeURIComponent('http:' + path)}&target[]=${encodeURIComponent('https:' + path)}&target[]=${encodeURIComponent('https:' + path.endsWith('/') ? path.slice(0, -1) : str)}`;
+      apiURL += `&target[]=${encodeURIComponent('http:' + path)}&target[]=${encodeURIComponent('https:' + path)}&target[]=${encodeURIComponent('https:' + path.replace(/\/$/, ""))}`;
     });
 
     /** @type {WebmentionResponse} */