diff --git a/main/webapp/modules/core/scripts/dialogs/expression-preview-dialog.js b/main/webapp/modules/core/scripts/dialogs/expression-preview-dialog.js
index dcc3c5480..5a1287d9f 100644
--- a/main/webapp/modules/core/scripts/dialogs/expression-preview-dialog.js
+++ b/main/webapp/modules/core/scripts/dialogs/expression-preview-dialog.js
@@ -194,7 +194,7 @@ ExpressionPreviewDialog.Widget.prototype._renderHelp = function(data) {
             description: "The current cell's value. This is a shortcut for 'cell.value'."
         },
         {   name: "row",
-            description: "The current row. It has 4 fields: 'flagged', 'starred', 'index', and 'cells'."
+            description: "The current row. It has 5 fields: 'flagged', 'starred', 'index', 'cells', and 'record'."
         },
         {   name: "cells",
             description: "The cells of the current row. This is a shortcut for 'row.cells'. " +
diff --git a/main/webapp/modules/core/scripts/views/data-table/menu-facets.js b/main/webapp/modules/core/scripts/views/data-table/menu-facets.js
index 660908289..a4098becc 100644
--- a/main/webapp/modules/core/scripts/views/data-table/menu-facets.js
+++ b/main/webapp/modules/core/scripts/views/data-table/menu-facets.js
@@ -138,6 +138,22 @@ DataTableColumnHeaderUI.extendMenu(function(column, columnHeaderUI, menu) {
                     }
                 },
                 {},
+                {
+                    id: "core/duplicates-facet",
+                    label: "Duplicates facet",
+                    click: function() {
+                        ui.browsingEngine.addFacet(
+                            "list",
+                            {
+                                "name": column.name,
+                                "columnName": column.name,
+                                "expression": "facetCount(value, 'value', '" +
+                                                          column.name + "') > 1"
+                            }
+                        );
+                    }
+                },
+                {},
                 {
                     id: "core/numeric-log-facet",
                     label: "Numeric log facet",