diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a6d15b56c39cea9ef675c5bd03af8c1f9db6fb23..9a28c51e6ed843f3ad08bc0f065581258581e2fc 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -50,6 +50,7 @@ variables:
   OPT_IN_TEST_PREVIOUS_MINOR: 1
   OPT_IN_TEST_NEXT_MINOR: 1
   _PHPUNIT_CONCURRENT: "1"
+  _PHPUNIT_EXTRA: --verbose
   _CSPELL_WORDS: 'Datasource, datasource'
 
 
diff --git a/modules/jsonapi_search_api_facets/tests/src/Functional/IndexFacetsTest.php b/modules/jsonapi_search_api_facets/tests/src/Functional/IndexFacetsTest.php
index db1ba9f57f981db2e3229b83ff4b9efdcd883a5a..35a8b6b9dc975d513f4d57b20ea64030d5abbbe6 100644
--- a/modules/jsonapi_search_api_facets/tests/src/Functional/IndexFacetsTest.php
+++ b/modules/jsonapi_search_api_facets/tests/src/Functional/IndexFacetsTest.php
@@ -69,6 +69,7 @@ final class IndexFacetsTest extends BrowserTestBase {
     FacetSource::create([
       'id' => 'jsonapi_search_api_facets__database_search_index',
       'name' => 'jsonapi_search_api_facets:database_search_index',
+      'filter_key' => 'filter',
     ])->save();
   }
 
@@ -133,13 +134,13 @@ final class IndexFacetsTest extends BrowserTestBase {
         sort($expected_filters[$filter_name]['condition']['value']);
       }
     }
-    foreach ($filter_params['f'] as $filter_name => $expected_filter) {
+    foreach ($filter_params['filter'] as $filter_name => $expected_filter) {
       if (is_array($expected_filter)) {
-        sort($filter_params['f'][$filter_name]['condition']['value']);
+        sort($filter_params['filter'][$filter_name]['condition']['value']);
       }
     }
 
-    $this->assertEquals(['f' => $expected_filters], $filter_params, var_export($filter_params, TRUE));
+    $this->assertEquals(['filter' => $expected_filters], $filter_params, var_export($filter_params, TRUE));
   }
 
   /**
@@ -172,7 +173,7 @@ final class IndexFacetsTest extends BrowserTestBase {
       $this->assertEquals($show_numbers, isset($first_term['values']['count']), var_export($facet, TRUE));
     }
 
-    $url->setOption('query', ['f' => $facet_query]);
+    $url->setOption('query', ['filter' => $facet_query]);
     $data = $this->doRequest($url);
     $this->assertCount($expected_filtered_count, $data['data'], var_export($data, TRUE));
 
@@ -236,7 +237,7 @@ final class IndexFacetsTest extends BrowserTestBase {
     $this->createFacet('category', 'Category', 'category', 'or', FALSE);
     $url = Url::fromRoute('jsonapi_search_api.index_database_search_index', [], [
       'query' => [
-        'f' => [
+        'filter' => [
           'name' => 'does not exist',
         ],
       ],
@@ -276,7 +277,7 @@ final class IndexFacetsTest extends BrowserTestBase {
     ];
     $url = Url::fromRoute('jsonapi_search_api.index_database_search_index', [], [
       'query' => [
-        'f' => $filter,
+        'filter' => $filter,
       ],
     ]);
     $data = $this->doRequest($url);
@@ -285,7 +286,7 @@ final class IndexFacetsTest extends BrowserTestBase {
     $first_term = reset($keywords_facet['terms']);
     $first_term_url_query = [];
     parse_str(parse_url($first_term['url'], PHP_URL_QUERY), $first_term_url_query);
-    $this->assertEquals($filter, $first_term_url_query['f']);
+    $this->assertEquals($filter, $first_term_url_query['filter']);
   }
 
   /**