diff --git a/src/auto-reply/reply/export-html/template.js b/src/auto-reply/reply/export-html/template.js
index 464209129884..602ac03b1dbd 100644
--- a/src/auto-reply/reply/export-html/template.js
+++ b/src/auto-reply/reply/export-html/template.js
@@ -699,11 +699,11 @@
     return "application/octet-stream";
   }
 
-  function sanitizeImageBase64(data) {
-    if (typeof data !== "string") {
+  function sanitizeImageBase64(base64Data) {
+    if (typeof base64Data !== "string") {
       return "";
     }
-    const cleaned = data.replace(/\s+/g, "");
+    const cleaned = base64Data.replace(/\s+/g, "");
     if (!cleaned || cleaned.length % 4 !== 0 || !SAFE_BASE64_RE.test(cleaned)) {
       return "";
     }
@@ -712,11 +712,11 @@
 
   function renderDataUrlImage(img, className) {
     const mimeType = sanitizeImageMimeType(img?.mimeType);
-    const base64 = sanitizeImageBase64(img?.data);
-    if (!base64) {
+    const imgBase64 = sanitizeImageBase64(img?.data);
+    if (!imgBase64) {
       return "";
     }
-    return `<img src="data:${mimeType};base64,${base64}" class="${className}" />`;
+    return `<img src="data:${mimeType};base64,${imgBase64}" class="${className}" />`;
   }
   /**
    * Truncate string to maxLen chars, append "..." if truncated.
@@ -864,8 +864,8 @@
         div.appendChild(content);
         // Navigate to the newest leaf through this node, but scroll to the clicked node
         div.addEventListener("click", () => {
-          const leafId = findNewestLeaf(entry.id);
-          navigateTo(leafId, "target", entry.id);
+          const targetLeafId = findNewestLeaf(entry.id);
+          navigateTo(targetLeafId, "target", entry.id);
         });
 
         container.appendChild(div);