diff --git a/server/controllers/LibraryController.js b/server/controllers/LibraryController.js
index d9e30130..b2461a3a 100644
--- a/server/controllers/LibraryController.js
+++ b/server/controllers/LibraryController.js
@@ -165,6 +165,7 @@ class LibraryController {
     if (payload.filterBy) {
       // If filtering by series, will include seriesName and seriesSequence on media metadata
       filterSeries = (payload.mediaType == 'book' && payload.filterBy.startsWith('series.')) ? libraryHelpers.decode(payload.filterBy.replace('series.', '')) : null
+      if (filterSeries === 'No Series') filterSeries = null
 
       libraryItems = libraryHelpers.getFilteredLibraryItems(libraryItems, payload.filterBy, req.user, this.rssFeedManager.feedsArray)
       payload.total = libraryItems.length