diff --git a/LLama.Web/Common/InferenceOptions.cs b/LLama.Web/Common/InferenceOptions.cs
index c2420af37..0b38a04d8 100644
--- a/LLama.Web/Common/InferenceOptions.cs
+++ b/LLama.Web/Common/InferenceOptions.cs
@@ -23,7 +23,7 @@ public class InferenceOptions : IInferenceParams
         /// <summary>
         /// Sequences where the model will stop generating further tokens.
         /// </summary>
-        public IEnumerable<string> AntiPrompts { get; set; } = Array.Empty<string>();
+        public IReadOnlyList<string> AntiPrompts { get; set; } = Array.Empty<string>();
         /// <summary>
         /// path to file for saving/loading model eval state
         /// </summary>
diff --git a/LLama/Abstractions/IInferenceParams.cs b/LLama/Abstractions/IInferenceParams.cs
index 93a9b52ba..a21c7306b 100644
--- a/LLama/Abstractions/IInferenceParams.cs
+++ b/LLama/Abstractions/IInferenceParams.cs
@@ -29,7 +29,7 @@ public interface IInferenceParams
 		/// <summary>
 		/// Sequences where the model will stop generating further tokens.
 		/// </summary>
-		public IEnumerable<string> AntiPrompts { get; set; }
+		public IReadOnlyList<string> AntiPrompts { get; set; }
 
 		/// <summary>
 		///  0 or lower to use vocab size
diff --git a/LLama/Common/InferenceParams.cs b/LLama/Common/InferenceParams.cs
index bef64631a..d0217e2f8 100644
--- a/LLama/Common/InferenceParams.cs
+++ b/LLama/Common/InferenceParams.cs
@@ -28,7 +28,7 @@ public record InferenceParams : IInferenceParams
         /// <summary>
         /// Sequences where the model will stop generating further tokens.
         /// </summary>
-        public IEnumerable<string> AntiPrompts { get; set; } = Array.Empty<string>();
+        public IReadOnlyList<string> AntiPrompts { get; set; } = Array.Empty<string>();
 
         /// <summary>
         ///  0 or lower to use vocab size