diff --git a/content/mdnotes.js b/content/mdnotes.js
index 747c547..d37c4e0 100644
--- a/content/mdnotes.js
+++ b/content/mdnotes.js
@@ -352,7 +352,11 @@ function noteToMarkdown(item) {
   noteMD.mdnotesFileName = getMDNoteFileName(parentItem);
   noteMD.metadataFileName = getZMetadataFileName(parentItem);
   if (getPref("obsidian.blocks")) {
-    noteMD.noteContent = Zotero.MarkdownUtils.addBlockIds(noteMD.noteContent, noteMD.mdnotesFileName);
+    let citekey = '';
+    if (citekey !== "undefined" && getPref("obsidian.blocks.use_citekey")) {
+      citekey = getCiteKey(parentItem);
+    }
+    noteMD.noteContent = Zotero.MarkdownUtils.addBlockIds(noteMD.noteContent, citekey);
   }
 
   return noteMD;
diff --git a/defaults/preferences/mdnotes.js b/defaults/preferences/mdnotes.js
index 1db40ee..c136595 100644
--- a/defaults/preferences/mdnotes.js
+++ b/defaults/preferences/mdnotes.js
@@ -47,3 +47,4 @@ pref("extensions.mdnotes.html2md.rules.underline.close", "\n\n");
 pref("extensions.mdnotes.obsidian.vault", "");
 pref("extensions.mdnotes.obsidian.attach_obsidian_uri", false);
 pref("extensions.mdnotes.obsidian.blocks", false);
+pref("extensions.mdnotes.obsidian.blocks.use_citekey", false);