diff --git a/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatOptions.cs b/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatOptions.cs
index fe6ef70187c..fe4ea1ed7ea 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatOptions.cs
+++ b/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatOptions.cs
@@ -182,7 +182,7 @@ protected ChatOptions(ChatOptions? other)
     /// </remarks>
     [Experimental("MEAI001")]
     [JsonIgnore]
-    public bool? AllowBackgroundResponses { get; set; }
+    public bool AllowBackgroundResponses { get; set; }
 
     /// <summary>Gets or sets the continuation token for resuming and getting the result of the chat response identified by this token.</summary>
     /// <remarks>