diff --git a/PROMS/VEPROMS User Interface/frmVEPROMS.cs b/PROMS/VEPROMS User Interface/frmVEPROMS.cs
index 05955591..e7a16a4a 100644
--- a/PROMS/VEPROMS User Interface/frmVEPROMS.cs	
+++ b/PROMS/VEPROMS User Interface/frmVEPROMS.cs	
@@ -1261,7 +1261,8 @@ namespace VEPROMS
 		private void tv_WordSectionDeleted(object sender, WordSectionEventArgs args)
 		{
 			// is it a library document - if so and libdoc panel is visible, update lists on panel.
-			if ((!args.MySectionInfo.IsStepSection) && ((args.MySectionInfo.MyContent.MyEntry.MyDocument.LibTitle ?? "") != "") && (toolsPanel.Expanded))
+			// entry is null if it's a table of contents.
+			if ((!args.MySectionInfo.IsStepSection) && (args.MySectionInfo.MyContent.MyEntry != null) && ((args.MySectionInfo.MyContent.MyEntry.MyDocument.LibTitle ?? "") != "") && (toolsPanel.Expanded))
 			{
 				if (toolsTabs.SelectedTab == tabItemLibDocs)
 				{