diff --git a/MediaBrowser.Model/Dto/BaseItemDto.cs b/MediaBrowser.Model/Dto/BaseItemDto.cs
index b38763fbf7..937409111a 100644
--- a/MediaBrowser.Model/Dto/BaseItemDto.cs
+++ b/MediaBrowser.Model/Dto/BaseItemDto.cs
@@ -551,7 +551,7 @@ namespace MediaBrowser.Model.Dto
         /// Gets or sets the parent primary image item identifier.
         /// </summary>
         /// <value>The parent primary image item identifier.</value>
-        public string ParentPrimaryImageItemId { get; set; }
+        public Guid? ParentPrimaryImageItemId { get; set; }
 
         /// <summary>
         /// Gets or sets the parent primary image tag.
diff --git a/MediaBrowser.Model/LiveTv/SeriesTimerInfoDto.cs b/MediaBrowser.Model/LiveTv/SeriesTimerInfoDto.cs
index b26f5f45fe..1e8add9430 100644
--- a/MediaBrowser.Model/LiveTv/SeriesTimerInfoDto.cs
+++ b/MediaBrowser.Model/LiveTv/SeriesTimerInfoDto.cs
@@ -83,7 +83,7 @@ namespace MediaBrowser.Model.LiveTv
         /// Gets or sets the parent primary image item identifier.
         /// </summary>
         /// <value>The parent primary image item identifier.</value>
-        public string ParentPrimaryImageItemId { get; set; }
+        public Guid? ParentPrimaryImageItemId { get; set; }
 
         /// <summary>
         /// Gets or sets the parent primary image tag.
diff --git a/src/Jellyfin.LiveTv/LiveTvDtoService.cs b/src/Jellyfin.LiveTv/LiveTvDtoService.cs
index 55b056d3d8..acf168cf11 100644
--- a/src/Jellyfin.LiveTv/LiveTvDtoService.cs
+++ b/src/Jellyfin.LiveTv/LiveTvDtoService.cs
@@ -221,7 +221,7 @@ namespace Jellyfin.LiveTv
                     try
                     {
                         dto.ParentPrimaryImageTag = _imageProcessor.GetImageCacheTag(program, image);
-                        dto.ParentPrimaryImageItemId = program.Id.ToString("N", CultureInfo.InvariantCulture);
+                        dto.ParentPrimaryImageItemId = program.Id;
                     }
                     catch (Exception ex)
                     {
@@ -327,7 +327,7 @@ namespace Jellyfin.LiveTv
                     try
                     {
                         dto.ParentPrimaryImageTag = _imageProcessor.GetImageCacheTag(program, image);
-                        dto.ParentPrimaryImageItemId = program.Id.ToString("N", CultureInfo.InvariantCulture);
+                        dto.ParentPrimaryImageItemId = program.Id;
                     }
                     catch (Exception ex)
                     {