diff --git a/chrome/content/zotero/xpcom/itemTreeView.js b/chrome/content/zotero/xpcom/itemTreeView.js
index 1230d5ad0..dd7c48025 100644
--- a/chrome/content/zotero/xpcom/itemTreeView.js
+++ b/chrome/content/zotero/xpcom/itemTreeView.js
@@ -934,6 +934,23 @@ Zotero.ItemTreeView.prototype.sort = function(itemID)
 		}
 		
 		switch (columnField) {
+			case 'date':
+				fieldA = a.getField('date', true, true).substr(0, 10);
+				fieldB = b.getField('date', true, true).substr(0, 10);
+				
+				// Display rows with empty values last
+				cmp = (fieldA == '' && fieldB != '') ? -1 :
+					(fieldA != '' && fieldB == '') ? 1 : 0;
+				if (cmp) {
+					return cmp;
+				}
+				
+				cmp = (fieldA > fieldB) ? -1 : (fieldA < fieldB) ? 1 : 0;
+				if (cmp) {
+					return cmp;
+				}
+				break;
+			
 			case 'type':
 				var typeA = Zotero.getString('itemTypes.'+Zotero.ItemTypes.getName(a.ref.itemTypeID));
 				var typeB = Zotero.getString('itemTypes.'+Zotero.ItemTypes.getName(b.ref.itemTypeID));
@@ -988,7 +1005,6 @@ Zotero.ItemTreeView.prototype.sort = function(itemID)
 				return cmp;
 			}
 			
-			//cmp = (fieldA > fieldB) ? -1 : (fieldA < fieldB) ? 1 : 0;
 			cmp = collation.compareString(1, fieldB, fieldA);
 			if (cmp) {
 				return cmp;
@@ -996,8 +1012,8 @@ Zotero.ItemTreeView.prototype.sort = function(itemID)
 		}
 		
 		if (columnField != 'date') {
-			fieldA = a.getField('date', true, true);
-			fieldB = b.getField('date', true, true);
+			fieldA = a.getField('date', true, true).substr(0, 10);
+			fieldB = b.getField('date', true, true).substr(0, 10);
 			
 			// Display rows with empty values last
 			cmp = (fieldA == '' && fieldB != '') ? -1 :