diff --git a/DeepDrftManager/Services/CmsTrackService.cs b/DeepDrftManager/Services/CmsTrackService.cs
index 3246ed3..ba6e0de 100644
--- a/DeepDrftManager/Services/CmsTrackService.cs
+++ b/DeepDrftManager/Services/CmsTrackService.cs
@@ -340,7 +340,7 @@ public class CmsTrackService : ICmsTrackService
             genre,
             releaseDate,
             imagePath,
-            releaseType = releaseType?.ToString(),
+            releaseType = releaseType.HasValue ? (int?)releaseType.Value : null,
             trackNumber,
         };