diff --git a/components/cards/LazyBookCard.vue b/components/cards/LazyBookCard.vue
index 44837f95..f9bea4d8 100644
--- a/components/cards/LazyBookCard.vue
+++ b/components/cards/LazyBookCard.vue
@@ -239,7 +239,7 @@ export default {
       if (this.orderBy === 'mtimeMs') return 'Modified ' + this.$formatDate(this._libraryItem.mtimeMs)
       if (this.orderBy === 'birthtimeMs') return 'Born ' + this.$formatDate(this._libraryItem.birthtimeMs)
       if (this.orderBy === 'addedAt') return 'Added ' + this.$formatDate(this._libraryItem.addedAt)
-      if (this.orderBy === 'duration') return 'Duration: ' + this.$elapsedPrettyExtended(this.media.duration, false)
+      if (this.orderBy === 'media.duration') return 'Duration: ' + this.$elapsedPrettyExtended(this.media.duration, false)
       if (this.orderBy === 'size') return 'Size: ' + this.$bytesPretty(this._libraryItem.size)
       return null
     },