diff --git a/src/NzbDrone.Core/Books/Calibre/CalibreProxy.cs b/src/NzbDrone.Core/Books/Calibre/CalibreProxy.cs
index f9e8029cf..30d9e2f42 100644
--- a/src/NzbDrone.Core/Books/Calibre/CalibreProxy.cs
+++ b/src/NzbDrone.Core/Books/Calibre/CalibreProxy.cs
@@ -214,7 +214,7 @@ public void SetFields(BookFile file, CalibreSettings settings, bool updateCover
         {
             var edition = file.Edition.Value;
             var book = edition.Book.Value;
-            var serieslink = book.SeriesLinks.Value.FirstOrDefault(x => x.Series.Value.Title.IsNotNullOrWhiteSpace());
+            var serieslink = book.SeriesLinks.Value.OrderBy(x => x.SeriesPosition).FirstOrDefault(x => x.Series.Value.Title.IsNotNullOrWhiteSpace());
 
             var series = serieslink?.Series.Value;
             double? seriesIndex = null;
diff --git a/src/NzbDrone.Core/MediaFiles/EbookTagService.cs b/src/NzbDrone.Core/MediaFiles/EbookTagService.cs
index 367c3b25a..515624980 100644
--- a/src/NzbDrone.Core/MediaFiles/EbookTagService.cs
+++ b/src/NzbDrone.Core/MediaFiles/EbookTagService.cs
@@ -200,7 +200,7 @@ private IEnumerable<RetagBookFilePreview> GetPreviews(List<BookFile> files)
             {
                 var edition = file.Edition.Value;
                 var book = edition.Book.Value;
-                var serieslink = book.SeriesLinks.Value.FirstOrDefault(x => x.Series.Value.Title.IsNotNullOrWhiteSpace());
+                var serieslink = book.SeriesLinks.Value.OrderBy(x => x.SeriesPosition).FirstOrDefault(x => x.Series.Value.Title.IsNotNullOrWhiteSpace());
 
                 var series = serieslink?.Series.Value;
                 double? seriesIndex = null;