diff --git a/src/NzbDrone.Core/MediaFiles/TrackImport/Identification/IdentificationService.cs b/src/NzbDrone.Core/MediaFiles/TrackImport/Identification/IdentificationService.cs
index 1e76c1405..19f81f152 100644
--- a/src/NzbDrone.Core/MediaFiles/TrackImport/Identification/IdentificationService.cs
+++ b/src/NzbDrone.Core/MediaFiles/TrackImport/Identification/IdentificationService.cs
@@ -157,7 +157,7 @@ private bool ShouldFingerprint(LocalAlbumRelease localAlbumRelease)
             var worstTrackMatchDist = localAlbumRelease.TrackMapping?.Mapping
                 .Select(x => x.Value.Item2.NormalizedDistance())
                 .DefaultIfEmpty(1.0)
-                .Max();
+                .Max() ?? 1.0;
 
             if (localAlbumRelease.Distance.NormalizedDistance() > 0.15 ||
                 localAlbumRelease.TrackMapping.LocalExtra.Any() ||