diff --git a/core/utils/convertQuotes.js b/core/utils/convertQuotes.js
index 59a54831..8e8d258e 100644
--- a/core/utils/convertQuotes.js
+++ b/core/utils/convertQuotes.js
@@ -12,9 +12,11 @@ function convertQuotes(markdown, bibliography, records, idToHighlight) {
 
     const idsDictionnary = new Map();
 
-    for (const item of quote.citations) {
-      if (!bibliography.library[item.id]) continue;
+    if (!quote.citations.every(({ id }) => !!bibliography.library[id])) {
+      return markdown;
+    }
 
+    for (const item of quote.citations) {
       // get text to replace for each quote item
       const itemText = bibliography.citeproc
         .processCitationCluster(
diff --git a/core/utils/convertQuotes.spec.js b/core/utils/convertQuotes.spec.js
index c8d6df27..34b36408 100644
--- a/core/utils/convertQuotes.spec.js
+++ b/core/utils/convertQuotes.spec.js
@@ -135,6 +135,14 @@ describe('convertQuotes', () => {
     );
   });
 
+  it('should convert no link', () => {
+    const text = 'Lorem ipsum dolor est.';
+
+    const result = convertQuotes(text, bibliography, records, 'matuschak2019');
+
+    expect(result).toEqual('Lorem ipsum dolor est.');
+  });
+
   it('should not add "highlight" class if unknown record', () => {
     const text = 'Lorem @matuschak2019 ipsum dolor est.';
 
@@ -150,4 +158,12 @@ describe('convertQuotes', () => {
       'Lorem (Matuschak, 2019) ipsum dolor est.',
     );
   });
+
+  it('should return original if unknown quote id from library', () => {
+    const text = 'Lorem [@matuschak2019; @unknown] ipsum dolor est.';
+
+    expect(convertQuotes(text, bibliography, records, 'matuschak2019')).toEqual(
+      'Lorem [@matuschak2019; @unknown] ipsum dolor est.',
+    );
+  });
 });