Index: lams_tool_notebook/src/java/org/lamsfoundation/lams/tool/notebook/model/Notebook.java
===================================================================
diff -u -r1d4d39bc99bceeb2f3400228a83823b8cd67c6da -r9c643e79aafe255969018c7e8b6118e9e9970af5
--- lams_tool_notebook/src/java/org/lamsfoundation/lams/tool/notebook/model/Notebook.java	(.../Notebook.java)	(revision 1d4d39bc99bceeb2f3400228a83823b8cd67c6da)
+++ lams_tool_notebook/src/java/org/lamsfoundation/lams/tool/notebook/model/Notebook.java	(.../Notebook.java)	(revision 9c643e79aafe255969018c7e8b6118e9e9970af5)
@@ -390,7 +390,7 @@
 			if (notebookAttachments != null) {
 				// create a copy of the attachments
 				Iterator iter = notebookAttachments.iterator();
-				Set set = new HashSet();
+				Set<NotebookAttachment> set = new HashSet<NotebookAttachment>();
 				while (iter.hasNext()) {
 					NotebookAttachment originalFile = (NotebookAttachment) iter.next();
 					NotebookAttachment newFile = (NotebookAttachment) originalFile