diff --git a/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/ListsTest.php b/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/ListsTest.php
new file mode 100644
index 000000000..7afc0137e
--- /dev/null
+++ b/tests/unit/workflow/engine/src/ProcessMaker/BusinessModel/ListsTest.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace ProcessMaker\BusinessModel;
+
+use ProcessMaker\BusinessModel\Lists;
+use ProcessMaker\Model\User;
+use Tests\TestCase;
+
+/**
+ * Lists Tests
+ */
+class ListsTest extends TestCase
+{
+    /**
+     * It tests the construct of the Lists class
+     * 
+     * @covers \ProcessMaker\BusinessModel\Lists
+     * @test
+     */
+    public function it_should_test_the_lists_construct()
+    {
+        $user = factory(User::class)->create();
+
+        $list = new Lists();
+        $res = $list->getList('inbox', ['userId' => $user->USR_UID]);
+
+        $this->assertEmpty($res['data']);
+        $this->assertEquals(0, $res['totalCount']);
+    }
+}
diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Lists.php b/workflow/engine/src/ProcessMaker/BusinessModel/Lists.php
index e40d8f7c5..0302f2c20 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Lists.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Lists.php
@@ -69,7 +69,8 @@ class Lists
         ];
 
         // If the feature for highlight the home folders is disabled, add self-service list to the map
-        if (!HIGHLIGHT_HOME_FOLDER_ENABLE) {
+        $flag = defined('HIGHLIGHT_HOME_FOLDER_ENABLE') ? HIGHLIGHT_HOME_FOLDER_ENABLE : 0;
+        if (!$flag) {
             $this->mapList['ListSelfService'] = 'CASES_SELFSERVICE';
         }