diff --git a/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/util/PDFUtils.java b/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/util/PDFUtils.java
index b0922b46e..ce9b378c3 100644
--- a/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/util/PDFUtils.java
+++ b/jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/util/PDFUtils.java
@@ -75,7 +75,7 @@ public class PDFUtils {
         brush.getGraphics().save();
         brush.getGraphics().translateTransform((float) brush.getSize().getWidth() / 1.5, (float) brush.getSize().getHeight() / 3);
         brush.getGraphics().rotateTransform(-45);
-        brush.getGraphics().drawString(watermark, new PdfFont(PdfFontFamily.Helvetica, 10),
+        brush.getGraphics().drawString(watermark, new PdfFont(PdfFontFamily.Times_Roman, 10),
                 PdfBrushes.getViolet(), 0 , 0 , new PdfStringFormat(PdfTextAlignment.Center));
         brush.getGraphics().restore();
         brush.getGraphics().setTransparency(1);