diff --git a/module/VuFind/src/VuFind/ILS/Driver/NoILS.php b/module/VuFind/src/VuFind/ILS/Driver/NoILS.php
index b9bd25b67911dc4d11e6e0b3ab2a7edb6289d0bc..e48b2691e1a10247214a438b91f15165ff9ae147 100644
--- a/module/VuFind/src/VuFind/ILS/Driver/NoILS.php
+++ b/module/VuFind/src/VuFind/ILS/Driver/NoILS.php
@@ -43,6 +43,13 @@ use VuFind\Config\Reader as ConfigReader, VuFind\Exception\ILS as ILSException,
  */
 class NoILS extends AbstractBase implements ServiceLocatorAwareInterface
 {
+    /**
+     * Service locator
+     *
+     * @var ServiceLocatorInterface
+     */
+    protected $serviceLocator;
+
     /**
      * Initialize the driver.
      *
diff --git a/module/VuFind/src/VuFind/ILS/Driver/Symphony.php b/module/VuFind/src/VuFind/ILS/Driver/Symphony.php
index 86473511789f557062a712dfe10707479d303106..7794f14352d74e5d24ba77a0901dad4bed8765d3 100644
--- a/module/VuFind/src/VuFind/ILS/Driver/Symphony.php
+++ b/module/VuFind/src/VuFind/ILS/Driver/Symphony.php
@@ -48,6 +48,13 @@ class Symphony extends AbstractBase implements ServiceLocatorAwareInterface
     protected $policyCache = false;
     protected $policies;
 
+    /**
+     * Service locator
+     *
+     * @var ServiceLocatorInterface
+     */
+    protected $serviceLocator;
+
     /**
      * Initialize the driver.
      *