diff --git a/src/Entity/Note.php b/src/Entity/Note.php
index d21e27a..db87505 100644
--- a/src/Entity/Note.php
+++ b/src/Entity/Note.php
@@ -94,4 +94,18 @@ class Note
     {
         return \DateTimeImmutable::createFromFormat('U', $this->mod);
     }
+
+
+    // -------------------------------------------------- Utility functions ---
+
+    protected static function stringHighlight(string $haystack, string $needle)
+    {
+        $replace = sprintf(
+            '<span %s>%s</span>',
+            self::HIGHLIGHT_ATTR_KANJI,
+            $needle,
+        );
+
+        return str_replace($needle, $replace, strip_tags($haystack));
+    }
 }
diff --git a/src/Entity/SentenceListeningNote.php b/src/Entity/SentenceListeningNote.php
index 3dd4f8c..ab2ce5d 100644
--- a/src/Entity/SentenceListeningNote.php
+++ b/src/Entity/SentenceListeningNote.php
@@ -20,6 +20,10 @@ class SentenceListeningNote extends Note
         $this->fields['VocabKanji']    = $term->getKanji();
         $this->fields['VocabFurigana'] = $term->getReading();
         $this->fields['VocabDef']      = $term->toAnkiVocabDef();
+        $this->fields['SentKanji']     = $this->stringHighlight(
+            $this->fields['SentKanji'],
+            $term->getKanji(),
+        );
         $this->term = $term;
         return $this;
     }
@@ -55,8 +59,6 @@ class SentenceListeningNote extends Note
 
         // Related fields are updated using the setter
         $slNote->setTerm($term);
-        // Remove highlighting
-        $slNote->fields['SentKanji'] = strip_tags($slNote->fields['SentKanji']);
         // Reset relations and basic data
         $slNote->id      = null;
         $slNote->model   = self::MODEL_NAME;