diff --git a/PROMS/Volian.Print.Library/VlnSvgPageHelper.cs b/PROMS/Volian.Print.Library/VlnSvgPageHelper.cs
index 28922545..1be654d3 100644
--- a/PROMS/Volian.Print.Library/VlnSvgPageHelper.cs
+++ b/PROMS/Volian.Print.Library/VlnSvgPageHelper.cs
@@ -2610,6 +2610,8 @@ namespace Volian.Print.Library
 		}
 		public void Add(ItemInfo itemInfo, string title, PdfDestination pdfDestination)
 		{
+			foreach (PageBookmark pb in this)
+				if (pb.Title == title) return;
 			Add(new PageBookmark(itemInfo, title, pdfDestination));
 		}
 	}