diff --git a/Digital Signature/Add-a-digital-signature-to-an-existing-document/.NET/Add-a-digital-signature-to-an-existing-document/Program.cs b/Digital Signature/Add-a-digital-signature-to-an-existing-document/.NET/Add-a-digital-signature-to-an-existing-document/Program.cs
index dbd2ec36..b68dd47f 100644
--- a/Digital Signature/Add-a-digital-signature-to-an-existing-document/.NET/Add-a-digital-signature-to-an-existing-document/Program.cs	
+++ b/Digital Signature/Add-a-digital-signature-to-an-existing-document/.NET/Add-a-digital-signature-to-an-existing-document/Program.cs	
@@ -5,7 +5,7 @@
 using Syncfusion.Pdf.Security;
 
 //Load the PDF document
-using (PdfLoadedDocument loadedDocument = new PdfLoadedDocument(@"Data/Input.pdf"))
+using (PdfLoadedDocument loadedDocument = new PdfLoadedDocument(Path.GetFullPath(@"Data/Input.pdf")))
 {
     // Gets the first page of the document
     PdfPageBase page = loadedDocument.Pages[0];