diff --git a/_config.php b/_config.php
index cbd85c9..8326916 100644
--- a/_config.php
+++ b/_config.php
@@ -1,3 +1,7 @@
 <?php
 
 define('DISPLAY_LOGIC_DIR', basename(dirname(__FILE__)));
+
+// Ensure compatibility with PHP 7.2 ("object" is a reserved word),
+// with SilverStripe 3.6 (using Object) and SilverStripe 3.7 (using SS_Object)
+if (!class_exists('SS_Object')) class_alias('Object', 'SS_Object');
diff --git a/code/DisplayLogicCriteria.php b/code/DisplayLogicCriteria.php
index 5852730..134ce19 100644
--- a/code/DisplayLogicCriteria.php
+++ b/code/DisplayLogicCriteria.php
@@ -7,7 +7,7 @@
  * @package  display_logic
  * @author  Uncle Cheese <unclecheese@leftandmain.com>
  */
-class DisplayLogicCriteria extends Object {
+class DisplayLogicCriteria extends SS_Object {
 
 
 	/**
diff --git a/code/DisplayLogicCriterion.php b/code/DisplayLogicCriterion.php
index f942c3d..426559f 100644
--- a/code/DisplayLogicCriterion.php
+++ b/code/DisplayLogicCriterion.php
@@ -7,7 +7,7 @@
  * @package  display_logic
  * @author  Uncle Cheese <unclecheese@leftandmain.com>
  */
-class DisplayLogicCriterion extends Object {
+class DisplayLogicCriterion extends SS_Object {
 
 
 	/**