diff --git a/src/Core/Extension.php b/src/Core/Extension.php
index aca0ea377..253ea0d6a 100644
--- a/src/Core/Extension.php
+++ b/src/Core/Extension.php
@@ -44,6 +44,10 @@ abstract class Extension
      */
     private $ownerStack = [];
 
+    public function __construct()
+    {
+    }
+
     /**
      * Called when this extension is added to a particular class
      *
diff --git a/src/ORM/Search/FulltextSearchable.php b/src/ORM/Search/FulltextSearchable.php
index 72b17a27c..d5b918288 100644
--- a/src/ORM/Search/FulltextSearchable.php
+++ b/src/ORM/Search/FulltextSearchable.php
@@ -88,6 +88,7 @@ class FulltextSearchable extends DataExtension
      */
     public function __construct($searchFields = array())
     {
+        parent::__construct();
         if (is_array($searchFields)) {
             $this->searchFields = $searchFields;
         } else {
diff --git a/tests/php/Core/ObjectTest/ExtendTest2.php b/tests/php/Core/ObjectTest/ExtendTest2.php
index 2e0aad98a..78326d76a 100644
--- a/tests/php/Core/ObjectTest/ExtendTest2.php
+++ b/tests/php/Core/ObjectTest/ExtendTest2.php
@@ -11,6 +11,7 @@ class ExtendTest2 extends Extension implements TestOnly
 
     public function __construct()
     {
+        parent::__construct();
         $this->constructorArgs = func_get_args();
     }
 
diff --git a/tests/php/Core/ObjectTest/ExtendTest3.php b/tests/php/Core/ObjectTest/ExtendTest3.php
index 318e01d6e..d4d0c66e4 100644
--- a/tests/php/Core/ObjectTest/ExtendTest3.php
+++ b/tests/php/Core/ObjectTest/ExtendTest3.php
@@ -11,6 +11,7 @@ class ExtendTest3 extends Extension implements TestOnly
 
     public function __construct()
     {
+        parent::__construct();
         $this->constructorArgs = func_get_args();
     }