diff --git a/PROMS/VEPROMS User Interface/DlgPrintProcedure.cs b/PROMS/VEPROMS User Interface/DlgPrintProcedure.cs
index 05d76164..10e8d8e1 100644
--- a/PROMS/VEPROMS User Interface/DlgPrintProcedure.cs	
+++ b/PROMS/VEPROMS User Interface/DlgPrintProcedure.cs	
@@ -303,6 +303,7 @@ namespace VEPROMS
 				PDFFileName = string.Format("{0}", _MyProcedure.PDFNumber);
 			//if (txbPDFName.Text.StartsWith("*"))
 			//    txbPDFName.Text = txbPDFName.Text.Replace("*", this.UnitNumber);
+			if ((PDFFileName ?? "") == "") PDFFileName = "NoProcNumber";
 			if (PDFFileName.StartsWith("*"))
 				PDFFileName = PDFFileName.Replace("*", this.UnitNumber);
 			txbPDFName.Text = PDFFilePrefix + PDFFileName + PDFFileSuffix + ".pdf";