diff --git a/01 - Navigation/01 - Navigate to something you know/1.3. Navigate to class.txt b/01 - Navigation/01 - Navigate to something you know/1.3. Navigate to class.txt
index 8cdcb970..1c1d58b8 100644
--- a/01 - Navigation/01 - Navigate to something you know/1.3. Navigate to class.txt	
+++ b/01 - Navigation/01 - Navigate to something you know/1.3. Navigate to class.txt	
@@ -20,4 +20,5 @@ Command+O (Mac OS X)
 5. Filter to only check PHP files by clicking the filter icon.
 
 6. Include non-project classes.
-   Check the "Include non-project classes" checkbox and navigate to ArrayObject (PHP SPL library).
+   Check the "Include non-project classes" checkbox and search for Array.
+   With "Include non-project classes" it's possible to navigate to ArrayObject (PHP SPL library).
diff --git a/01 - Navigation/01 - Navigate to something you know/Code/JetBrains/Customers/Repositories/CustomerArrayProcessing.php b/01 - Navigation/01 - Navigate to something you know/Code/JetBrains/Customers/Repositories/CustomerArrayProcessing.php
new file mode 100644
index 00000000..7c24437d
--- /dev/null
+++ b/01 - Navigation/01 - Navigate to something you know/Code/JetBrains/Customers/Repositories/CustomerArrayProcessing.php	
@@ -0,0 +1,7 @@
+<?php
+namespace Navigation1\JetBrains\Customers\Repositories;
+
+
+abstract class CustomerArrayProcessing {
+
+}