diff --git a/libraries/classes/Util.php b/libraries/classes/Util.php
index ee9833747a..689830db2a 100644
--- a/libraries/classes/Util.php
+++ b/libraries/classes/Util.php
@@ -1913,7 +1913,7 @@ class Util
         // It future replace str_getcsv with $dbi->fetchSingleRow('SELECT '.$expressionInBrackets[1]);
 
         preg_match('/\((.*)\)/', $definition, $expressionInBrackets);
-        $matches = str_getcsv($expressionInBrackets[1], ',', "'");
+        $matches = str_getcsv($expressionInBrackets[1], ',', "'", '\\');
 
         $values = [];
         foreach ($matches as $value) {