diff --git a/src/Orm/EntityRepository.php b/src/Orm/EntityRepository.php
index bd00479f40..042dd0884c 100644
--- a/src/Orm/EntityRepository.php
+++ b/src/Orm/EntityRepository.php
@@ -122,7 +122,8 @@ private function addSearchClause(QueryBuilder $queryBuilder, SearchDto $searchDt
                     $queryBuilder->setParameter($parameterName, $dqlParameters['uuid_query'], 'ulid');
                 } elseif ($propertyConfig['is_text'] || $propertyConfig['is_integer']) {
                     $parameterName = sprintf('query_for_text_%d', $queryTermIndex);
-                    $queryTermConditions->add(sprintf('LOWER(%s.%s) LIKE :%s', $entityName, $propertyConfig['property_name'], $parameterName));
+                    // concatenating an empty string is needed to avoid issues on PostgreSQL databases (https://github.com/EasyCorp/EasyAdminBundle/issues/6290)
+                    $queryTermConditions->add(sprintf('LOWER(CONCAT(%s.%s, \'\')) LIKE :%s', $entityName, $propertyConfig['property_name'], $parameterName));
                     $queryBuilder->setParameter($parameterName, $dqlParameters['text_query']);
                 } elseif ($propertyConfig['is_json'] && !$isPostgreSql) {
                     // neither LOWER() nor LIKE() are supported for JSON columns by all PostgreSQL installations