diff --git a/t/Koha/SearchEngine/Elasticsearch/Search.t b/t/Koha/SearchEngine/Elasticsearch/Search.t
index 6353793b10..cae1b2a96e 100755
--- a/t/Koha/SearchEngine/Elasticsearch/Search.t
+++ b/t/Koha/SearchEngine/Elasticsearch/Search.t
@@ -27,6 +27,7 @@ subtest 'search_auth_compat' => sub {
     plan tests => 4;
 
     t::lib::Mocks::mock_preference( 'QueryRegexEscapeOptions', 'dont_escape' );
+    t::lib::Mocks::mock_preference( 'SearchEngine', 'Elasticsearch' );
 
     my $search;
     ok(