diff --git a/Jellyfin.Api/Models/SessionDtos/ClientCapabilitiesDto.cs b/Jellyfin.Api/Models/SessionDtos/ClientCapabilitiesDto.cs
index 12ce19368b..b72dcff88e 100644
--- a/Jellyfin.Api/Models/SessionDtos/ClientCapabilitiesDto.cs
+++ b/Jellyfin.Api/Models/SessionDtos/ClientCapabilitiesDto.cs
@@ -55,12 +55,12 @@ public class ClientCapabilitiesDto
     // TODO: Remove after 10.9
     [Obsolete("Unused")]
     [DefaultValue(false)]
-    public bool? SupportsContentUploading { get; set; }
+    public bool? SupportsContentUploading { get; set; } = false;
 
     // TODO: Remove after 10.9
     [Obsolete("Unused")]
     [DefaultValue(false)]
-    public bool? SupportsSync { get; set; }
+    public bool? SupportsSync { get; set; } = false;
 #pragma warning restore CS1591 // Missing XML comment for publicly visible type or member
 
     /// <summary>
diff --git a/MediaBrowser.Model/Session/ClientCapabilities.cs b/MediaBrowser.Model/Session/ClientCapabilities.cs
index 5f51fb21c3..fc1f24ae16 100644
--- a/MediaBrowser.Model/Session/ClientCapabilities.cs
+++ b/MediaBrowser.Model/Session/ClientCapabilities.cs
@@ -35,11 +35,11 @@ namespace MediaBrowser.Model.Session
         // TODO: Remove after 10.9
         [Obsolete("Unused")]
         [DefaultValue(false)]
-        public bool? SupportsContentUploading { get; set; }
+        public bool? SupportsContentUploading { get; set; } = false;
 
         // TODO: Remove after 10.9
         [Obsolete("Unused")]
         [DefaultValue(false)]
-        public bool? SupportsSync { get; set; }
+        public bool? SupportsSync { get; set; } = false;
     }
 }