diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
index 8049796..d318b93 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
@@ -300,7 +300,7 @@ public function createDatabase($database) {
   }
 
   public function mapConditionOperator($operator) {
-    static $specials = array(
+    $specials = array(
       // In PostgreSQL, 'LIKE' is case-sensitive. For case-insensitive LIKE
       // statements, we need to use ILIKE instead.
       'LIKE' => array('operator' => 'ILIKE'),