diff --git a/src/Infrastructure/BotSharp.Abstraction/Files/Constants/FileConstants.cs b/src/Infrastructure/BotSharp.Abstraction/Files/Constants/FileConstants.cs
index 683d037c..dab5bc81 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Files/Constants/FileConstants.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Files/Constants/FileConstants.cs
@@ -2,7 +2,7 @@ namespace BotSharp.Abstraction.Files.Constants;
 
 public class FileConstants
 {
-    public static readonly IEnumerable<string> AudioTypes = new List<string>
+    public static readonly IEnumerable<string> AudioExtensions = new List<string>
     {
         ".mp3", ".wav", ".flac", ".aac", ".ogg", ".wma"
     };
diff --git a/src/Infrastructure/BotSharp.OpenAPI/Controllers/ConversationController.cs b/src/Infrastructure/BotSharp.OpenAPI/Controllers/ConversationController.cs
index 1999cfd1..261eb04b 100644
--- a/src/Infrastructure/BotSharp.OpenAPI/Controllers/ConversationController.cs
+++ b/src/Infrastructure/BotSharp.OpenAPI/Controllers/ConversationController.cs
@@ -414,8 +414,8 @@ public class ConversationController : ControllerBase
         using Stream stream = System.IO.File.Open(file, FileMode.Open, FileAccess.Read, FileShare.Read);
         var bytes = new byte[stream.Length];
         stream.Read(bytes, 0, (int)stream.Length);
-        var fileExtensions = Path.GetExtension(file).ToLower();
-        var enableRangeProcessing = FileConstants.AudioTypes.Contains(fileExtensions);
+        var fileExtension = Path.GetExtension(file).ToLower();
+        var enableRangeProcessing = FileConstants.AudioExtensions.Contains(fileExtension);
         return File(bytes, "application/octet-stream", Path.GetFileName(file), enableRangeProcessing: enableRangeProcessing);
     }