1 files changed, 2 insertions, 1 deletions
diff --git a/includes/database/query.inc b/includes/database/query.inc
index 50c106c0d..0061abe0f 100644
--- a/includes/database/query.inc
+++ b/includes/database/query.inc
@@ -1330,13 +1330,14 @@ class DatabaseCondition implements QueryConditionInterface, Countable {
       'NOT IN' => array('delimiter' => ', ', 'prefix' => ' (', 'postfix' => ')'),
       'IS NULL' => array('use_value' => FALSE),
       'IS NOT NULL' => array('use_value' => FALSE),
+      // Use backslash for escaping wildcard characters.
+      'LIKE' => array('postfix' => " ESCAPE '\\\\'"),
       // These ones are here for performance reasons.
       '=' => array(),
       '<' => array(),
       '>' => array(),
       '>=' => array(),
       '<=' => array(),
-      'LIKE' => array(),
     );
     if (isset($specials[$operator])) {
       $return = $specials[$operator];