diff --git a/server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs b/server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs
index 7d69b2f..1c75e03 100644
--- a/server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs
+++ b/server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs
@@ -410,7 +410,7 @@ public class PdfGenerationService : IPdfGenerationService
     {
         using var document = new PdfDocument();
         var totalPages = images.Count;
-        var font = new XFont("Arial", 10, XFontStyleEx.Regular);
+        var font = new XFont("Arial", 10, XFontStyle.Regular);
         var brush = new XSolidBrush(XColor.FromArgb(153, 153, 153)); // #999999
 
         for (var i = 0; i < totalPages; i++)