diff --git a/chrome/chromeFiles/content/scholar/xpcom/data_access.js b/chrome/chromeFiles/content/scholar/xpcom/data_access.js
index ed6d47e92..e9bd86711 100644
--- a/chrome/chromeFiles/content/scholar/xpcom/data_access.js
+++ b/chrome/chromeFiles/content/scholar/xpcom/data_access.js
@@ -1231,6 +1231,10 @@ Scholar.Notes = new function(){
 				Scholar.DB.commitTransaction();
 				throw ("Cannot set note source to invalid item " + sourceItemID);
 			}
+			if (sourceItem.isNote()){
+				Scholar.DB.commitTransaction();
+				throw ("Cannot set note source to another note (" + sourceItemID + ")");
+			}
 		}
 		
 		var note = Scholar.Items.getNewItemByType(Scholar.ItemTypes.getID('note'));