diff --git a/core/modules/views/src/Plugin/views/join/JoinPluginBase.php b/core/modules/views/src/Plugin/views/join/JoinPluginBase.php
index 8c79be9..12d75b9 100644
--- a/core/modules/views/src/Plugin/views/join/JoinPluginBase.php
+++ b/core/modules/views/src/Plugin/views/join/JoinPluginBase.php
@@ -303,15 +303,13 @@ public function buildJoin($select_query, $table, $view_query) {
           if (is_array($info['value']) && count($info['value']) == 1) {
             $info['value'] = array_shift($info['value']);
           }
-          $use_parenthesis = FALSE;
           if (is_array($info['value'])) {
             // We use an SA-CORE-2014-005 conformant placeholder for our array
             // of values. Also, note that the 'IN' operator is implicit.
             // @see https://www.drupal.org/node/2401615.
-            $placeholder = ':views_join_condition_' . $select_query->nextPlaceholder() . '[]';
+            $placeholder = '( :views_join_condition_' . $select_query->nextPlaceholder() . '[] )';
             $operator = !empty($info['operator']) ? $info['operator'] : 'IN';
             $arguments[$placeholder] = $info['value'];
-            $use_parenthesis = TRUE;
           }
           else {
             // With a single value, the '=' operator is implicit.
@@ -337,12 +335,7 @@ public function buildJoin($select_query, $table, $view_query) {
             $arguments[$placeholder] = $info['value'];
           }
           // Render out the SQL fragment with parameters.
-          if ($use_parenthesis) {
-            $extras[] = "$join_table_field $operator ( $placeholder )";
-          }
-          else {
-            $extras[] = "$join_table_field $operator $placeholder";
-          }
+          $extras[] = "$join_table_field $operator $placeholder";
         }
 
         if ($extras) {