diff --git a/dotnet/src/InternalUtilities/src/Diagnostics/ModelDiagnostics.cs b/dotnet/src/InternalUtilities/src/Diagnostics/ModelDiagnostics.cs
index 21504eda40c2..b22461a0d39f 100644
--- a/dotnet/src/InternalUtilities/src/Diagnostics/ModelDiagnostics.cs
+++ b/dotnet/src/InternalUtilities/src/Diagnostics/ModelDiagnostics.cs
@@ -4,7 +4,6 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
-using System.Text;
 using System.Text.Json;
 using Microsoft.SemanticKernel.ChatCompletion;
 
@@ -636,5 +635,5 @@ private static class ModelDiagnosticsTags
                 { AuthorRole.Tool, ToolMessage }
             };
     }
-    # endregion
+    #endregion
 }