diff --git a/code/model/DMSDocumentSet.php b/code/model/DMSDocumentSet.php
index 005524f..12f3664 100644
--- a/code/model/DMSDocumentSet.php
+++ b/code/model/DMSDocumentSet.php
@@ -122,7 +122,8 @@ class DMSDocumentSet extends DataObject
                     ->setFieldCasting(array('LastEdited' => 'Datetime->Ago'))
                     ->setFieldFormatting(
                         array(
-                            'FilenameWithoutID' => '<a target=\'_blank\' class=\'file-url\' href=\'$Link\'>$FilenameWithoutID</a>',
+                            'FilenameWithoutID' => '<a target=\'_blank\' class=\'file-url\''
+                                . ' href=\'$Link\'>$FilenameWithoutID</a>',
                             'ManuallyAdded' => function ($value) {
                                 if ($value) {
                                     return _t('DMSDocumentSet.MANUAL', 'Manually');
@@ -311,4 +312,14 @@ class DMSDocumentSet extends DataObject
             array('ManuallyAdded' => _t('DMSDocumentSet.ADDEDMETHOD', 'Added'))
         );
     }
+
+    protected function validate()
+    {
+        $result = parent::validate();
+
+        if (!$this->getTitle()) {
+            $result->error(_t('DMSDocumentSet.VALIDATION_NO_TITLE', '\'Title\' is required.'));
+        }
+        return $result;
+    }
 }
diff --git a/tests/DMSDocumentSetTest.php b/tests/DMSDocumentSetTest.php
index 4204db8..cf46e32 100644
--- a/tests/DMSDocumentSetTest.php
+++ b/tests/DMSDocumentSetTest.php
@@ -163,7 +163,7 @@ class DMSDocumentSetTest extends SapphireTest
     {
         Config::inst()->update('DMS', 'shortcode_handler_key', 'unit-test');
 
-        $set = DMSDocumentSet::create();
+        $set = DMSDocumentSet::create(array('Title' => 'TestSet'));
         $set->write();
 
         $fields = $set->getCMSFields();
@@ -187,4 +187,18 @@ class DMSDocumentSetTest extends SapphireTest
         $set->saveLinkedDocuments();
         $this->assertEquals(2, $set->getDocuments()->count(), 'Set has 2 documents');
     }
+
+    /**
+     * Tests that an exception is thrown if no title entered for a DMSDocumentSet.
+     * @expectedException ValidationException
+     */
+    public function testExceptionOnNoTitleGiven()
+    {
+        $set = DMSDocumentSet::create(array('Title' => ''));
+        try {
+            $set->write();
+        } catch (ValidationException $e) {
+            throw $e;
+        }
+    }
 }